algae / greenwater help needed

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xpirtdesign

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Nov 18, 2008
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I have a pressurized co2 tank and im dosing dry fertz per instructions on chucks calculator. I have about 4wpg on a 37 gallon tank. Its heavily planted and i have some mollies, tetras, and some shrimp.

I have my lights running about 7.5 hours a day, and my ph tester shows green after a couple of hours of the co2 being on. the co2 turns on about an hour before the lights do. I do 50% water changes every week.

My problem is green water as well as an green colored algae film growing on the glass. There is almost no algae on plants though.

I tried a black out for 3 or 4 days and that cleared up the water and glass completely, but about a week later it started growing back slowly. The water isnt extremely green, nor is the algae on the glass but its annoying and seems to be growing very slowly.

My plants are growing very well, and I was dosing excel for a month or so but that wasnt doing much.

Any suggestions? I know something is probably out of balance...but i have no idea what. The only testing kit i have is a liquid PH tester and I have no money for any other equipment at the moment.

Thanks in advance.
 
I found it by accident when i ran a search, i was pleasantly surprised. Glad you guys found it helpful
 
I am trying low tech in my tank now, using willow branches, I was told 6 to 8 days and it will clear the water. I am half way, still nothing. Will let you know.
This is what was used in the past when they didn't have high tech filters.
Will see.
 
this time of year.. willows are dormant.. it may take a bit of time to stimulate them. I have had the best luck in spring
 
Star_rider, so I should be waiting double the time then for the branches to show roots, if lucky.
Well we have time, the fish don't mind, lets see what happens.
 
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