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  1. #261
    Senior Member Rank = Gosai Jampot's Avatar
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    I have used Manado 25ltr bag.
    In anoxic baskets Mike?

    It looks to me as though the sub strata and nutrient are mingled in the Manado so not quite how the bonsai growing medium / cat litter and Aquabasis interact, if I understand correctly.. It has quite small particles 0.5 - 2 mm which certainly wouldn't have stayed in the baskets I used without some finer mesh to line them.

    Mannh I didn't quite get the same yield as RS2000 from the molar clay - bought 7 of the bags for 21 baskets but ran out at 18 baskets after sieving fine dust out so I guess it can vary. I did however buy too much Aquabasis and have a bag unopened if you are in the NW.

    Jim
    I don't keep fish, I keep water. I don't keep fish, I keep water. I don't keep fish I kee........

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  3. #262
    Senior Member Rank = Hassai Mike Bass's Avatar
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    Quote Originally Posted by Jampot View Post
    In anoxic baskets Mike?

    It looks to me as though the sub strata and nutrient are mingled in the Manado so not quite how the bonsai growing medium / cat litter and Aquabasis interact, if I understand correctly.. It has quite small particles 0.5 - 2 mm which certainly wouldn't have stayed in the baskets I used without some finer mesh to line them.

    Mannh I didn't quite get the same yield as RS2000 from the molar clay - bought 7 of the bags for 21 baskets but ran out at 18 baskets after sieving fine dust out so I guess it can vary. I did however buy too much Aquabasis and have a bag unopened if you are in the NW.

    Jim
    Yes mini anoxic baskets in the aquarium also coped with the fact that the UV was not working. Anoxic baskets Manado+cat litter used in my QT filtration as well as the 1000Gallon pond. I have planned for anoxic baskets in my new build too.
    Last edited by Mike Bass; 29-07-2020 at 12:21 PM.
    1kGal BD/Skim RDF/UV/k1 2.3kGal 2windows 2airBD/skim Sieve/Eazypod RDFcombi+bakki 3xVP/UV,ASHP

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  5. #263
    Extreme Koi Member Rank = Sansai Sez's Avatar
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    With regards to the cat litter, I bought the Tesco pink dust free cat litter from (Made in Denmark). I’ve rinsed it loads and it’s been soaking for a week but still smells like lavender, so I’m very cautious about using it. The bag doesn’t say that it is fragranced but it definitely is. What did you guys do?


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  7. #264
    Senior Member Rank = Hassai Mike Bass's Avatar
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    Quote Originally Posted by Sez View Post
    With regards to the cat litter, I bought the Tesco pink dust free cat litter from (Made in Denmark). I’ve rinsed it loads and it’s been soaking for a week but still smells like lavender, so I’m very cautious about using it. The bag doesn’t say that it is fragranced but it definitely is. What did you guys do?


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    I used the Catsan brand which is available from Costco in big bags or from Amazon. No fragrance & just a quick rinse sat in a basket or better overnight in the rain. Then pack around a bit of 1.5” pipe. Fill the pipe above the level of the litter with Manado, then slowly agitating a little as you ease out the pipe it will fill the space previously taken up by the pipe thickness. Then a fine stainless steel mesh cut to size in layer into the top and zip tied to the basket.
    4366486B-8FB0-48B9-B261-30B64D339C2A.jpg

    1A30DBD1-5515-40E9-8AB3-035ACF1CCDDB.jpg

    I also float a raft of aquaponic growing plants above for extra measure
    1kGal BD/Skim RDF/UV/k1 2.3kGal 2windows 2airBD/skim Sieve/Eazypod RDFcombi+bakki 3xVP/UV,ASHP

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  9. #265
    Member Rank = Sansai Mannh85's Avatar
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    Thanks for the feedback guys. Does anyone know roughly how many baskets a 5L bag of JBL Aquabasis will do?

  10. #266
    Senior Member Rank = Gosai Jampot's Avatar
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    I 'bagged' 21 fistfuls of the Aquabasis in old tights in anticipation of installing 21 baskets. I didn't actually use my fist - trialled a few into various containers until I found a little stainless steel bowl that seemed about right and then used that to measure it, so all the baskets have the same amount.

    There was stuff left from the 5l bag so I would estimate 24 of my fists / bowls full from the bag.

    I have that plus 3 little tight bags and 1 unopened 5l bag left as the Molar clay only stretched to 18 baskets.

    Perhaps RS2000 will chip in as his baskets may have been a little smaller than mine.

    Jim
    I don't keep fish, I keep water. I don't keep fish, I keep water. I don't keep fish I kee........

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  12. #267
    Member Rank = Sansai Mannh85's Avatar
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    Thanks for the info Jim, sounds like 5L goes quite far which is good!

  13. #268
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    Think I got around 15 baskets from one 5l bag of aquabasis, but not sure of I was putting enough into each basket, but nitrates are staying low so they must be working.

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  15. #269
    Senior Member Rank = Nanasai Handy Kenny's Avatar
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    Mannh85,

    Baskets from different manufacturers although nominally marked as the same size can be different through marginal differences in height or length/width. The amount of Aquabasis you add will vary from person to person and the height of the cat litter in the basket will differ. However it is possibly barely relevant whether you get 15 or 20 baskets other than you have to buy more baskets.

    Here is a thought for discussion. We sieve the Catsan cat litter to take out the dust which is a natural product but we seem more than willing to chuck the likes of Kusuri Klay (another natural product) into the pond to help clean it up and add nutrients.

    When I create my next baskets I am going to put the Aquabasis into one of the feet of a pair of tights that I then use the top for to go around the whole basket. Knocking over the baskets have made a bit of a mess for me in the past.

    Kenny

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  17. #270
    Member Rank = Sansai Mannh85's Avatar
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    Quote Originally Posted by Handy Kenny View Post
    Mannh85,

    Baskets from different manufacturers although nominally marked as the same size can be different through marginal differences in height or length/width. The amount of Aquabasis you add will vary from person to person and the height of the cat litter in the basket will differ. However it is possibly barely relevant whether you get 15 or 20 baskets other than you have to buy more baskets.

    Here is a thought for discussion. We sieve the Catsan cat litter to take out the dust which is a natural product but we seem more than willing to chuck the likes of Kusuri Klay (another natural product) into the pond to help clean it up and add nutrients.

    When I create my next baskets I am going to put the Aquabasis into one of the feet of a pair of tights that I then use the top for to go around the whole basket. Knocking over the baskets have made a bit of a mess for me in the past.

    Kenny
    Hi Kenny, thanks for your input - so how do you determine how much Aquabasis to use per basket? Is there a rough ratio of grams of Aquabasis per volume of basket? Or is it purely a guessing game? Is it possible to have too much per basket? I know the MS article mentions 200g-400g but that's a huge difference.

  18. #271
    Hello all,

    First post on the forum from me. I’ve found this thread incredibly useful and have read it from front to back and back to front. I have my first small koi pond - circa 2500 litres and have 5 small koi (4-6”). I’m planning on growing these on, see how they get on and potentially expand the pond if and when needed.

    Anoxic filtration has really caught my attention. The only thing that concerns me a little is my lack of space. My pond is above ground, built into decking and tucked in a corner with brick walls on 2 sides. I think I’ve got enough space to put 4 or 5 ‘baskets’ in but unsure if this will be enough? I’m not planning on stocking with any more fish. I’ve read that you should have 1 basket per adult koi. Is this assuming a koi of circa 20” plus?

    I’ve currently only got a kockney koi mega black box with 11w UV. Water quality is pretty good however I’m still very early on in the cycle. Due to being so early in the cycle, I’m tempted to go for anoxic filtration, remove the bio in the black box and add more mechanical filtration. I’m not convinced this type of filter will be able to remove nitrates neither - hence anoxic would be more favourable.

    Hope this makes sense. It’s all a big learning curve for me.

  19. #272
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    Assuming the black box filter feeds back into the pond via gravity, you could build a tank/vat/container filled with Anoxic baskets between the black box and the pond so the water flows through the filter, then the baskets and out into the pond.



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  21. #273
    Quote Originally Posted by RS2OOO View Post
    Assuming the black box filter feeds back into the pond via gravity, you could build a tank/vat/container filled with Anoxic baskets between the black box and the pond so the water flows through the filter, then the baskets and out into the pond.



    Sent from my Pixel 2 using Tapatalk
    Yes, it flows back via gravity. I’m thinking of building a rectangular trough that will house 4 or 5 baskets. I’ll then put a small spillway above the basket water level for drainage back to the pond. Dwell time should be fairly decent in the trough to give the baskets time to work. I can then make it look half decent with a few plants etc?

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  23. #274
    Senior Member Rank = Supreme Champion RS2OOO's Avatar
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    If you have the room for it that would be a good solution. Also has the advantage of increasing your overall water volume.

    Sent from my Pixel 2 using Tapatalk

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  25. #275
    Senior Member Rank = Nanasai Handy Kenny's Avatar
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    Quote Originally Posted by Mannh85 View Post
    Hi Kenny, thanks for your input - so how do you determine how much Aquabasis to use per basket? Is there a rough ratio of grams of Aquabasis per volume of basket? Or is it purely a guessing game? Is it possible to have too much per basket? I know the MS article mentions 200g-400g but that's a huge difference.
    Mannh85,

    I don't think it is an exact science since there are a number of variables to contend with - actual size of baskets, flow around baskets, quality of cat litter (sometimes there a lot of wee pink stones in it), whether or not you also have plants in the baskets, chemical make up of water etc. I put in a small mug full of Aquabasis although I often read of people using a cupful. I also probably put in more baskets than required (with and without plants) but I have plenty of space to do that, so the baskets may last longer. How long they last is another variable that I don't understand. My planted baskets are in the pond which would have a direct effect, others are in a sump after the solids filtration.

    The baskets should be out of any direct water flow so a quiet area is best. If you are building a box to put them in I would think keeping the flow above the level of the baskets would be more suitable rather than having the water flow through.

    Kenny
    Last edited by Handy Kenny; 11-08-2020 at 03:05 AM.

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  27. #276
    Well I’ve gone for it and built a trough that holds circa 200 litres and has 5 anoxic baskets within it. This then spills over using a stainless spillway back into the pond. I only have a small pond and stocked with 6 smaller koi - biggest one is 12” at the moment. There’s potential to add baskets in the future by building an add on to the trough in an L shape but I’ll see how it goes.

    I used the Bonsai gravel that RS had previously posted. Didn’t take much at all to wash down, really impressed with it. I’ve then added 400g of Aquabasis Plus into some tights and put them in the centre of the baskets.

    As my pond is fairly new, I still have traces of ammonia - mainly 0.25 but can 0.50 on a bad day or if I haven’t changed the water for a week. I’m pretty sure that in less than 24 hours the baskets have already made a difference as ammonia is now less than 0.25 but still showing a trace. Nitrite are 0.

    I’ll post some readings over the next few days / weeks to show the trends. Very impressed so far though. It’s so simple as well! Thank you all for the thread as it’s been really useful - also Manky Sanke’s website which has been used as my bible ��

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  29. #277
    So I’m slightly over a week into having anoxic filter as my sole source of bio filtration.

    As of this evening my water parameters are:
    Ammonia: 0
    Nitrite: 0
    Nitrate: 1 ppm
    kH: 3
    gH: 3
    Phosphate: 0.5ppm

    Really happy with how it’s progressed over the last week. Admittedly I only have a small load with 6 small koi but my pond is also small.

    I also ran out of the Bonsai danish pink stuff so resorted to buying a 30L bag of Sanicat Pink from my local pet wholesaler. This cost £9.99 and is superb for the money. It’s looks strangely similar to the bonsai danish pink stuff - it may even be the same ��

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  31. #278
    Member Rank = Sansai Mannh85's Avatar
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    Quote Originally Posted by harvey_w View Post
    So I’m slightly over a week into having anoxic filter as my sole source of bio filtration.

    As of this evening my water parameters are:
    Ammonia: 0
    Nitrite: 0
    Nitrate: 1 ppm
    kH: 3
    gH: 3
    Phosphate: 0.5ppm

    Really happy with how it’s progressed over the last week. Admittedly I only have a small load with 6 small koi but my pond is also small.

    I also ran out of the Bonsai danish pink stuff so resorted to buying a 30L bag of Sanicat Pink from my local pet wholesaler. This cost £9.99 and is superb for the money. It’s looks strangely similar to the bonsai danish pink stuff - it may even be the same ��
    Sounds promising, well done! I am building an anoxic filter for my new pond also, hoping to achieve similar results.

    Is there a best way to return the water into the anoxic, is it best to return below water level? As close to the bottom as possible or does it not matter as long as it doesn't unsettle the baskets too much?

  32. #279
    Senior Member Rank = Gosai Jampot's Avatar
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    or does it not matter as long as it doesn't unsettle the baskets too much?
    This. Of course the water has to 'pass' the baskets so if it goes in at or above the surface it may be better to leave towards the bottom or vice versa.

    I have just swapped a nexus 200 for an RDF and 18 anoxic baskets. 4 weeks in and it seems too good to be true. Getting a hint of pink on Nitrite but no ammonia showing on a Colombo kit so I have splashed out on Hanna gear for reassurance!

    Jim
    I don't keep fish, I keep water. I don't keep fish, I keep water. I don't keep fish I kee........

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  34. #280
    Quote Originally Posted by Mannh85 View Post
    Sounds promising, well done! I am building an anoxic filter for my new pond also, hoping to achieve similar results.

    Is there a best way to return the water into the anoxic, is it best to return below water level? As close to the bottom as possible or does it not matter as long as it doesn't unsettle the baskets too much?
    I have what looks like a trough with the 5 baskets in. All baskets touch at the top but being tapered there is plenty of space and water flow between the baskets. All 6 sides of the baskets are subject to flow, as suggested on Manke’s website.

    I know what you’re saying about the flow, I thought the same so have done as you suggest. Water in is at the bottom and I have a t-piece that distributes to both sides of the trough - I was worried if it was only one end the I would have stagnation at the other end. The water then exits in the middle via a spillway back into the pond.

    Good luck with your build
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