Welcome to Koi Forum. Is this your first visit? Register
Results 1 to 16 of 16
  1. #1
    Extreme Koi Member Rank = Tosai Timl's Avatar
    Join Date
    Sep 2015
    Location
    St Albans, Herts
    Posts
    20
    Thanks / Likes
    2

    Which dechlorinator

    Hi all,


    I am happily trickling in around 2% of water per day using a staging tank (100 litre compact water butt) in my workshop which is next to my Koi pond. This is fed via an inlet valve at the top, and another at the base, so I can add a known amount of water. Inside I have an airstone in the tank diverted off of my main pond air pump, which I use to effectively bubble off chlorine for a day, then open the outlet valve which trickles into the pond over 30 mins. I stop off the input so no new water can enter at this point.
    Currently this is a manual process daily. I have the necessary 2 solenoids and a z-wave module to control this process on a timer which I will fit soon to automate this.
    I have tested the water going in and out, and there is zero chlorine once its been bubbled for even 8 hours or so. However, I am aware that other stuff like Chloramine and heavy metals will still be present, all sensitive for Koi, so I want to also add an in-line dechlorinator (probably wont need the air then).


    Any recommendations for a good dechlorinator that will treat as many nasties in the water for a reasonable price?
    So far I have found:
    -Evolution Aqua - Around £60
    -www.waterfilterman.co.uk - Around £30


    Cheers,
    Tim



  2. #2
    Extreme Koi Member Rank = Nanasai bobchagi's Avatar
    Join Date
    Mar 2013
    Location
    CO MAYO IRELAND
    Posts
    604
    Thanks / Likes
    60
    Hi Tim,i have always used the EA inline dechlorinators .I change 10% [300gal] a week in the winter and 15% in the summer.I have 2x12in dechlorinators which i replace every spring.With a slow trickle i get a zero chlorine reading,Bob.

  3. #3
    Extreme Koi Member Rank = Tosai Timl's Avatar
    Join Date
    Sep 2015
    Location
    St Albans, Herts
    Posts
    20
    Thanks / Likes
    2
    Quote Originally Posted by bobchagi View Post
    Hi Tim,i have always used the EA inline dechlorinators .I change 10% [300gal] a week in the winter and 15% in the summer.I have 2x12in dechlorinators which i replace every spring.With a slow trickle i get a zero chlorine reading,Bob.
    Thanks Bob,

    I wondered if that one would come out on top, just wanted to see what all you experienced guys are using

    Cheers,
    Tim

  4. #4
    3 x 20" purifier from water filterman about £68 just renew the cartridges every 6 months or so. Change 20-30% each week. Also use the Ea but can't change the carbon so have to renew the whole unit annually.
    20" renew are £18 for all 3. 5 micron, carbon and resin block gets rid of 99% of cack in tap water.

  5. Thanks Timl Thanked / Liked this Post
  6. #5
    Extreme Koi Member Rank = Kyusai Scamp's Avatar
    Join Date
    Nov 2014
    Posts
    1,087
    Thanks / Likes
    1192
    Quote Originally Posted by Timl View Post
    Hi all,


    I am happily trickling in around 2% of water per day using a staging tank (100 litre compact water butt) in my workshop which is next to my Koi pond. This is fed via an inlet valve at the top, and another at the base, so I can add a known amount of water. Inside I have an airstone in the tank diverted off of my main pond air pump, which I use to effectively bubble off chlorine for a day, then open the outlet valve which trickles into the pond over 30 mins. I stop off the input so no new water can enter at this point.
    Currently this is a manual process daily. I have the necessary 2 solenoids and a z-wave module to control this process on a timer which I will fit soon to automate this.
    I have tested the water going in and out, and there is zero chlorine once its been bubbled for even 8 hours or so. However, I am aware that other stuff like Chloramine and heavy metals will still be present, all sensitive for Koi, so I want to also add an in-line dechlorinator (probably wont need the air then).


    Any recommendations for a good dechlorinator that will treat as many nasties in the water for a reasonable price?
    So far I have found:
    -Evolution Aqua - Around £60
    -www.waterfilterman.co.uk - Around £30


    Cheers,
    Tim
    Hi Tim
    i trickle 10% per week (400 gallons pw) at the moment through a 30" EA dechlorinator. In summer this increases to around 600 gallons pw. To be honest I like the ease of using this canister and the disposable aspect. Bigger size means u can flow a little quicker. Previously I used a big blue canister and refilled with carbon annually, but so far the EA is quite economical for my needs. Changed way before the supposed flow maximum (76k gallons!) normally every 14 months.
    Cheers

  7. Thanks Timl Thanked / Liked this Post
  8. #6
    Extreme Koi Member Rank = Mature Champion des68's Avatar
    Join Date
    Jun 2014
    Location
    Diss-Norfolk
    Posts
    2,348
    Thanks / Likes
    186
    Hi Tim.

    I change around 10-15% a week in the winter months and around 25% a week in the summer months, through a 3 pod de-chlorinator but also add Sodium Thiosulphate just for piece of mind if any contamanants do get through the pod.
    1500 gl in ground pond
    Retro BD to multibay with vortex, brushes, alfagrog, flocor, moving K1 bed, jap matt
    Oasis 3 bay multifilter, brushes, alfagrog, jap matt
    50 watt pro clear UV
    Hi-Blow 40 air pump
    Aqua forte 60 air pump
    Bermuda 2500 pond skimmer
    2kw Elecro pond heater
    Wireless pond thermometer


    DES.

  9. Thanks Timl Thanked / Liked this Post
  10. #7
    Extreme Koi Member Rank = Grand Champion Andre Asagi's Avatar
    Join Date
    Apr 2014
    Location
    Tosche Station....Picking Up Some Power Convertors
    Posts
    2,560
    Thanks / Likes
    1160
    Right, so, the message i typed out earlier, where it kept saying auto-saved...where is that now? I haven't navigated away from the page yet the text is gone. Where has it auto-saved to?

    I'm not typing it all out again, sorry.

    In short....EA do not make the purifiers themselves.

    The following images are screenshots of a video of me testing the output from an EA Purifier 6 weeks after purchasing it.

    You can make your own mind up as to how good they are....

  11. #8
    Extreme Koi Member Rank = Grand Champion Andre Asagi's Avatar
    Join Date
    Apr 2014
    Location
    Tosche Station....Picking Up Some Power Convertors
    Posts
    2,560
    Thanks / Likes
    1160
    No matter which way round i upload them, it puts them the wrong way round in the message. Why have they made this for more difficult to use?

  12. #9
    Extreme Koi Member Rank = Tosai Timl's Avatar
    Join Date
    Sep 2015
    Location
    St Albans, Herts
    Posts
    20
    Thanks / Likes
    2
    Thanks all for your replies,

    That gives me a good background again.
    So, Andre, I cant see a great deal on the pics, I feel your pain on the posting
    Are you saying that your tests found that the EA inline was not effective after 6 weeks?
    How much water had passed through it in this time roughly?

    Cheers,
    Tim

  13. #10
    Senior Member Rank = Grand Champion voodoo_15_uk's Avatar
    Join Date
    Aug 2012
    Location
    York
    Posts
    4,526
    Thanks / Likes
    3287
    I stopped using mine and now just use sodium thiosulphate. Won't be getting another.

  14. #11
    Extreme Koi Member Rank = Supreme Champion pondwithnoname's Avatar
    Join Date
    Feb 2014
    Location
    Suffolk
    Posts
    6,983
    Thanks / Likes
    1663
    I have a three pod but to be honest their so hit and miss because the flow can't be more than a literal trickle and the canisters are exhausted very quickly and become useless without indication.
    like others I use sodium thiosulphate because in crystal form it costs next to nothing, it's safe and I can run the tap at full blast.
    I still use the three pod but it's more out of habit than anything.
    Alias PWNN - Steve
    My favourite and recommended web site is......
    http://www.mankysanke.co.uk/
    http://www.freewebs.com/koikoi/

  15. #12
    Extreme Koi Member Rank = Grand Champion lee63's Avatar
    Join Date
    Oct 2014
    Location
    East riding of yorkshire
    Posts
    3,881
    Thanks / Likes
    3865
    Same here I use two 10" 3 pod units inline first pod 5micron pre filter, next 4 activated carbon and last carbon block. As said though they can be hit and miss if too much flow through them. I also have st at hand if need to top up quickly.


    Sent from my iPhone using Tapatalk
    Its always a work in progress

  16. #13
    Extreme Koi Member Rank = Tosai Timl's Avatar
    Join Date
    Sep 2015
    Location
    St Albans, Herts
    Posts
    20
    Thanks / Likes
    2
    All,
    Thanks for the info. Seems like 3 Pod is the way to go generally. I will probably look at a 3 stage as seems to be the norm (and a pretty good price), and upgrade the middle GAC one for a Cholramine reducing one. I am staging my water into the water butt before its daily empty, so hopefully I wont have issues with flow, as I wont be worried if it takes ages to fill.
    Interesting about the sodium thiosulphate though. How does this work, as it seems most people trickle straight in, so do you treat the whole pond?

    Cheers,
    Tim

  17. #14
    Moderator Rank = Supreme Champion Feline's Avatar
    Join Date
    Aug 2013
    Location
    Somerset
    Posts
    6,653
    Thanks / Likes
    5635
    I have a 3 pod system but had to take it off the main pond and stick it on the QT because it just can't cope with the flow rates I use when I top up after a filter clean every 2 days. If all you're doing is a VERY slow trickle in and trickle out then the 3 pod can work. You need to test the outflow for chlorine very regularly though. I find the cartridges don't last anywhere near as long as we are told they will.

    I have the medium sized big blue charcoal unit on my main pond now which is much better for being able to turn the flow up for a faster refill without 'passing' chlorine.

    Which ever filter you buy- it's a good idea to get some DPD4 tablets and run some tests on it at different flow rates to find out how fast you can go before it leaks chlorine. It is a woefully slow rate on a 3 pod 10" system.

  18. #15
    Extreme Koi Member Rank = Supreme Champion pondwithnoname's Avatar
    Join Date
    Feb 2014
    Location
    Suffolk
    Posts
    6,983
    Thanks / Likes
    1663
    Just a thought on the DPD4 tablets, aren't the considerably more expensive than a complete pond treatment with ST?
    I'm just thinking why bother testing for chlorine when using a dose of sodium thiosulphate is known to work and will be cheaper than actually testing for chlorine.
    I haven't worked it out but I doubt if ST costs more than 1p per 2000 gallons when bought in crystal form.
    Anyone fancy working out how much crystal ST costs per 1000 gallons, think I paid £7 for 1kg and the dose rate in solution is 125g per 1lt then 10ml per 100 gallons.
    What idiot made us use metric when most of us still talk in gallons.
    Alias PWNN - Steve
    My favourite and recommended web site is......
    http://www.mankysanke.co.uk/
    http://www.freewebs.com/koikoi/

  19. #16
    Moderator Rank = Supreme Champion Feline's Avatar
    Join Date
    Aug 2013
    Location
    Somerset
    Posts
    6,653
    Thanks / Likes
    5635
    Using ST only is an option if you use large top ups. However if you want to trickle in- trickle out then working out a dose of St and then constantly adding it is not ideal.
    I also want to filter out some of the heavy metals that might be present in the tap water- so charcoal is a better option.
    Compared to my monthly water bill (metered) the cost of the DPD4 tabs is insignificant

 

 

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT +1. The time now is 12:24 PM. Online Koi Mag Forum
Powered by vBulletin® Version 4.2.3
Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.

vBulletin Improved By vBFoster® (Lite Version), © UltimateScheme, Ltd.