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  1. #21
    Senior Member Rank = Mature Champion Ant62's Avatar
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    This year i have had big clumps of Blanket weed and i vacc it all out as i dont really like using chemicals but i suppose there are times you have to..
    The hit sun as caused a fair bit of BW and ive gotten to vaccin twice a week....

    Ive not had any of the black slimey stuff and i hope i dont....

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  3. #22
    Quote Originally Posted by Trace View Post
    If it is Phormidium (Black slimey) it reacts better to changes in O2 and level of light ... be careful with chemical treatments as it may make the conditions better for it ....

    If you've got it and clean it all off and don't change anything else it will return as it is the original conditions that give it the chance to bloom ...

    I tried that several times before starting to research it and finding the cure which for me was a LOT more O2 and water movement (extra air pump and several air stones) and removing some of the shade to change the light conditions into the pond.

    This cleared it up quite quickly, then I went back to normal aeration and it has never returned since ...

    I would say that the reason it started here was the addition of a small shade sail at the same time as experimenting with less aeration from my BD ... making perfect conditions for it ... it's nasty stuff ... very good at monopolizing all available resources and so can quickly take over all good fuzzy green algae and spread like wildfire ...
    Totally agree, mine was not clearing, but I finally got on top of it after adding an extra 100 lpm of air. Keep up water changes so you keep nitrates as low as possible, so it has nothing to feed on. The existing will have to be removed manually though, which for me meant brushing the entire pond and then cleaning the filter three or four times a day for two days.
    One more thing, it kills grass. I put a few filter pads on the lawn to hose them down, and after a week there was a dead patch of grass where each one rested.
    Mark
    19,000 litres
    Nexus 320 with Dracodrum and submersible UV
    Blue Eco 320
    Eazy Pod on skimmer
    Dura+ 10kW Heat Pump
    15 koi

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  5. #23
    Quote Originally Posted by Trace View Post
    If it is Phormidium (Black slimey) it reacts better to changes in O2 and level of light ... be careful with chemical treatments as it may make the conditions better for it ....

    If you've got it and clean it all off and don't change anything else it will return as it is the original conditions that give it the chance to bloom ...

    I tried that several times before starting to research it and finding the cure which for me was a LOT more O2 and water movement (extra air pump and several air stones) and removing some of the shade to change the light conditions into the pond.

    This cleared it up quite quickly, then I went back to normal aeration and it has never returned since ...

    I would say that the reason it started here was the addition of a small shade sail at the same time as experimenting with less aeration from my BD ... making perfect conditions for it ... it's nasty stuff ... very good at monopolizing all available resources and so can quickly take over all good fuzzy green algae and spread like wildfire ...
    Totally agree, mine was not clearing, but I finally got on top of it after adding an extra 100 lpm of air. Keep up water changes so you keep nitrates as low as possible, so it has nothing to feed on. The existing will have to be removed manually though, which for me meant brushing the entire pond and then cleaning the filter three or four times a day for two days.
    One more thing, it kills grass. I put a few filter pads on the lawn to hose them down, and after a week there was a dead patch of grass where each one rested.
    Mark
    19,000 litres
    Nexus 320 with Dracodrum and submersible UV
    Blue Eco 320
    Eazy Pod on skimmer
    Dura+ 10kW Heat Pump
    15 koi

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  7. #24
    Used cba May Day ,noticed black slimed algae week later, brushed pond walls today,gonna let filter do the work,upped air in pond this evening,gonna have to discharge filters a few times tomorrow by the look of it

  8. #25
    I used Resolve on 11th April

    It turned the water milky (not as bad as CBA)

    The blanket weed is gone , it stayed milky for about 2 weeks and is still slightly cloudy (was crystal clear before)

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  10. #26
    Banned Rank = Mature Champion Trace's Avatar
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    Quote Originally Posted by balder View Post
    Totally agree, mine was not clearing, but I finally got on top of it after adding an extra 100 lpm of air. Keep up water changes so you keep nitrates as low as possible, so it has nothing to feed on. The existing will have to be removed manually though, which for me meant brushing the entire pond and then cleaning the filter three or four times a day for two days.
    One more thing, it kills grass. I put a few filter pads on the lawn to hose them down, and after a week there was a dead patch of grass where each one rested.
    Mark
    Glad to hear you solved it Balder ... your one of the few who really knows how to cure it ... yes manual removal is required for the already established bacteria ... yup even kills grass and gave me a reaction that looked like burns ...

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  12. #27
    It really was an unpleasant experience. I still don't know where it came from, but I hope it never comes back.
    19,000 litres
    Nexus 320 with Dracodrum and submersible UV
    Blue Eco 320
    Eazy Pod on skimmer
    Dura+ 10kW Heat Pump
    15 koi

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  14. #28
    Senior Member Rank = Mature Champion Ant62's Avatar
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    Seeing that we had overnight rain and the lawn is very wet and there is more to come over night and tomorrow i decided to remove the masses of BW using a kiddies fishing net on a stick only cost a £...
    Works a treat no need for the vac at the moment.....

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  16. #29
    Banned Rank = Mature Champion Trace's Avatar
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    The best way I found to remove the Phormidium ... was to turn off the flow and brush all the walls and floor ...the Phormidium would all float to the top in mainly big chunks ... where like Ant I would use a large size Kids fishing net to quickly scoop about 95% of it straight into a bucket (the net having a very fine mesh only left tiny particles that the filter could easily deal with) and the next day water was crystal clear again ...

    I very quickly learned NOT to scoop it out by hand ...

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  18. #30
    Bumping this up. Have a load of this stuff appeared in the last week or so, floats to the top and collects at skimmer, doesn’t irritate skin.
    Cant work out if it’s dying blanket weed or the stuff talked about in this thread.
    Any clues?



    Sent from my iPhone using Tapatalk

  19. #31
    Senior Member Rank = Rokusai Ruffers22's Avatar
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    Aaahh, That's what it is? (Phormidium) Never heard of it until today.

    Bloody awful stuff though especially to remove by hand

    I have noticed a build up in the bottom tray and outlet weir of my bakki and also its started building up my skimmer inlet.

    So, If I up the O2 and increase the movement of water does it just die off and end up in the filter or will I need to dissemble my bakki and clean all the media? up
    EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
    "That'll do pig. That'll do"

  20. #32
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    I had loads of this floating on the surface and blocking the multibay up last spring. Minging stuff like. Did a 50% water change pond Vac and gutted all the multibay out. Horrid

    Sent from my F5121 using Tapatalk
    Freddyboy the legend

    "we are water keepers first"

    Johnathan

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  22. #33
    Senior Member Rank = Mature Champion dbs's Avatar
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    Hmmmmmm I may have this starting to appear not had it before only blanket weed, clean it up in the nexus and skimmer with a stiff brush, hopefully can keep it at just that, nothing in the drum yet <touch wood>

  23. #34
    Senior Member Rank = Rokusai Ruffers22's Avatar
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    Quote Originally Posted by dbs View Post
    Hmmmmmm I may have this starting to appear not had it before only blanket weed, clean it up in the nexus and skimmer with a stiff brush, hopefully can keep it at just that, nothing in the drum yet <touch wood>

    Same here, drum and sieve still look ok at the moment, but I've been scraping off the Bakki weir for a couple of weeks now.
    Wondering if its had anything to do with having the covers on so long (ie. not enough direct sunlight?)
    Covers came off this weekend so hoping that bit of extra daylight may help?
    EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
    "That'll do pig. That'll do"

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  25. #35
    Senior Member Rank = Mature Champion dbs's Avatar
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    Quote Originally Posted by Ruffers22 View Post
    Same here, drum and sieve still look ok at the moment, but I've been scraping off the Bakki weir for a couple of weeks now.
    Wondering if its had anything to do with having the covers on so long (ie. not enough direct sunlight?)
    Covers came off this weekend so hoping that bit of extra daylight may help?
    No idea, I have a large sunshade that I deliberately want to keep sun off it to combat the damn blanket weed - looks like I will have either one or the other

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  27. #36
    Senior Member Rank = Rokusai Ruffers22's Avatar
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    Quote Originally Posted by dbs View Post
    No idea, I have a large sunshade that I deliberately want to keep sun off it to combat the damn blanket weed - looks like I will have either one or the other

    I know mate I was thinking of putting a sail shade up myself.
    Although, maybe the dreaded blanket weed is The Lesser Of Two (W)Evils ?
    lesser-of-two-weevils1 (1).jpg
    EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
    "That'll do pig. That'll do"

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  29. #37
    Senior Member Rank = Mature Champion dbs's Avatar
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    Quote Originally Posted by Ruffers22 View Post
    I know mate I was thinking of putting a sail shade up myself.
    Although, maybe the dreaded blanket weed is The Lesser Of Two (W)Evils ?
    lesser-of-two-weevils1 (1).jpg
    Hahhaa it is for me that's for sure, I used to spend more on blanket week treatments that I did on food

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  31. #38
    Quote Originally Posted by Ajm View Post
    I had loads of this floating on the surface and blocking the multibay up last spring. Minging stuff like. Did a 50% water change pond Vac and gutted all the multibay out. Horrid

    Sent from my F5121 using Tapatalk
    Pretty much what I’ve just done yesterday. Seems better this morning.


    Sent from my iPhone using Tapatalk

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  33. #39
    Senior Member Rank = Rokusai Ruffers22's Avatar
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    Quote Originally Posted by Trace View Post
    If it is Phormidium (Black slimey) it reacts better to changes in O2 and level of light ... be careful with chemical treatments as it may make the conditions better for it ....

    If you've got it and clean it all off and don't change anything else it will return as it is the original conditions that give it the chance to bloom ...

    I tried that several times before starting to research it and finding the cure which for me was a LOT more O2 and water movement (extra air pump and several air stones) and removing some of the shade to change the light conditions into the pond.

    This cleared it up quite quickly, then I went back to normal aeration and it has never returned since ...

    I would say that the reason it started here was the addition of a small shade sail at the same time as experimenting with less aeration from my BD ... making perfect conditions for it ... it's nasty stuff ... very good at monopolizing all available resources and so can quickly take over all good fuzzy green algae and spread like wildfire ...
    When you say more water movement and extra O2 helped you get rid the damn stuff.
    How much extra O2 ?
    I don't have masses of it (yet) but it seems to be worse in the bakki weir? which should, if water movement and O2 is the cure be the last place I'd expect to find it?
    EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
    "That'll do pig. That'll do"

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  35. #40
    You won’t get an answer from Trace, she hasn’t been on for a very long time.


    Sent from my iPhone using Tapatalk

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