Major Algae in Planted Tank! - Page 2 - The Planted Tank Forum
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post #16 of 19 (permalink) Old 03-18-2013, 07:49 PM Thread Starter
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So I decided to raise the light by about 2 inches above the tank. I should have done this before since now the light is spread out more evenly across the tank as opposed to being super concentrated in the middle (where I am getting the most algae). I bought a CO2 drop checker (Fluval CO2 Indicator), and I think I need to create some 4dkh solution with some baking soda right? I have a KH test kit so it's just adding baking soda until a test shows 4dkh I'm assuming. Anyway, I've redone the DIY CO2. I like the idea of cycling bottles so CO2 levels stay consistent but hesistant to store it cause my room is small and a mess would cover everything. I've started witnessing pearling from some of the leaves so I guess that means CO2 levels are good?
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post #17 of 19 (permalink) Old 03-18-2013, 08:00 PM Thread Starter
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Also, I wanted to check that putting the diffuser about 3-4 inches below water level and having the bubbles spit out below where the filter drops water back into the tank will promote enough diffusion, or should I put the diffuser in the front near the gravel as much as possible.
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post #18 of 19 (permalink) Old 03-18-2013, 09:57 PM
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GDA, i know the true reason why this algae occur, let me clear that it will not go away if you wait for it to fall off by itself, it has nothing to do with the co2. it has to do with high phosphate and low nitrate, you can decrease the Phosphate dosing or increase the nitrate dosing. i can promise you that it will not come back again if you follow my suggestion. but make sure you clean the glass and follow the next step:

start with higher dosing of nitrate and less dosing of phosphate and if you start to see green spot algae then add more phosphate.
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post #19 of 19 (permalink) Old 03-19-2013, 01:17 AM
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Major Algae in Planted Tank!

Not sure how you have you co2 set up and I can completely relate to the mess concerns. The three bottle rotation works well to keep the co2 consistent and you can fit 3 bottles in a Home Depot bucket with the lid on. You would have to drill a small hole in the lid. That would reduce your chances of mess considerably.

I agree that algae is definitely the product of imbalance. Usually nitrates and phosphates but it could be almost anything. If you have any limited nutrient then the plants are not able to utilize the other nutrients. Opens he door for algae.
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