Hi, I have a couple questions about the EI method. First, some background:
I've been keeping fish since early 2007, have had four tanks so far, and am now back down to one: a 55g planted community tank. I got the 55g nearly a year ago but have only had it set up to keep plants since the end of August. Here's what I have on/in my tank:
4x65w (can turn off half)
75 lbs. onyx sand
10# CO2 tank
Penguin 350 HOB (temporarily on there to keep the surface of the water clean)
Potassium nitrate, Potassium phosphate, and Plantex CSM+B (using EI method)
I've been having some problems with algae...specifically the brown stuff that forms in clumps around my plants. Thus, I turned down my lights (using only half of it) and leaving them on only 5 or so hours a day. The CO2 is running at about 2 bps. I've been fertilizing consistently. Also, there is a weird film of something on the surface of the water when the HOB isn't on, so it is running 24/7 along with the CO2.
I'll have to post pics of the tank later on; I'm at school (college) right now and have no access.
1. What can I do about the algae problem? (I've read a couple articles here, but they are way over my head at this point.)
2. What can I do about the weird layer of stuff?
3. How do I know that my CO2 is at the right level? (I have a drop checker, but I was told to test the pH...however, I don't know what it should be at.)
I'll probably come up with more later. I can also list the plants I have, but will have to wait until I get home. Thanks.