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6888 Views 22 Replies 8 Participants Last post by  dawntwister
Our tap water here in Wichita KS is very high in phosphates, and it is making a mess with BBA I have not been able to get rid of it. Should I use Phosgaurd to lower it (my phosphate tester only goes to 10mg/L but as dark as the solution is I am sure it is much higher than that) ? What should I keep the phosphate level at?? Doesnt plants need phosphates??

Should I just Phosgaurd and put the correct amount of phosphorous back? Please help me out here.
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This is written by Chuck, whom is an aquariumest,
BBA thrives in situations of high phosphates. Phosphates come from fish waste, excess food, and occasionally will be present in the water supply. The best way to eliminate BBA is to let the plants out-compete the algae for the nutrients.

In heavily planted tanks, BBA will often show up when the plants have used up all the nitrates. This causes plant growth to slow or stop, which leaves the excess phosphates available to the algae. By supplying extra Nitrate to a planted tank, we allow plant growth to continue until all phosphate is consumed. Then plant AND algae growth will slow/stop. As long as a usable (5-10ppm) level of Nitrate is maintained, the the plants will continue to use up the available phosphate, effectively controls BBA and other phosphorus-dependant algaes.

He seems experienced.
Tom Barr in particular) claims to have tested extensively the "high phosphates cause BBA" theory and he has said it's been disproved.

Could it just be the imbalance of nitrates, Co2 and phosphates.
Thank you so much for the update on BBA. It is a chronic problem in my tanks.

First tank was 10 gallon El Natural. It received indirect sunlight. When I came back from vacation BBA everywhere. Second tank is a 29 gallon tank and doesn't get any sunlight. BBA on leaves on some plants. Was going to add a diy co2 system using a powerhead, but then realized I would have to add something else to circulate the water. Thus back to the drawing board.
From what I have read I gather:
1st item that cause algae grow is lack of bacteria which occurs in new tanks.
2nd is excess of light
3rd is fluctuating Co2.
4th is low nitrates.

Am I right?

Is it possible that high phosphates can cause an imbalance which will affect the level of nitrates and or Co2?
Thank you so much for the info.

I am at present battling hair algae. I just broke it down, for had vege ferts in the substate. The algae is coming back and it has been less than a week. Thus what was in the substrate wasn't adding to the algae bloom. Still working on the balancing act.
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