Ok... going to answer as many questions/comments as I can in one go.
What size is your tank? 6.6 gallon bookshelf
What temperature is your tank? stable 80F (can't get it much lower because of the heat)
Does your tank have a filter? Yes
Does your tank have an air stone or other type of aeration? No
Is your tank heated? Yes
What tank mates does your betta fish live with? 10 Ghost shrimp (was 11 a few days ago)
What type of food do you feed your betta fish? New Life Spectrum pellets for the betta, and betta flakes for the shrimp (but I have stopped feeding the shrimp for the past week)
How often do you feed your betta fish? Right when I wake up in the morning (6am), then around dinner time. No extra food, and if there is, the shrimp get it.
How often do you perform a water change? Weekly
What percentage of the water do you change when you perform a water change? I've been doing it at 80% recently, because of the algae. Otherwse, I'd do 50%
What type of additives do you add to the water when you perform a water change? API Water Conditioner
Have you tested your water? If so, what are the following parameters?
As of right now
Ammonia: 0 (it almost looks like it has a green tint, but on the color chart, its clearly yellow)
Originally Posted by Pogthefish
I know this sems irrelevant, but what saide of the room is the tank on? (north, south, east, west) and is it in sunlight? How long has it been setup?
I have east facing windows, and its in the kitchen on the north wall. It doesn't get much natural light, as I keep my blinds closed for the most part. Its been set up for about 2 months, I think.
Originally Posted by Aus
ETA: are you using sand as a substrate? Some sands leach a lot of silicate into the water, which encourages diatom bloom - if upping your water changes doesn't fix it in a few weeks, try changing the sand for something with less silica in it (LFS might help you there..)
Its mostly gravel, but I did mix in some Petco brand sand. There's not much, as most of it gets sucked up when I do my gravel vac.
Originally Posted by yayagirl1209
If you've got the money and the space in the tank, try adding stem plants (wisteria, moneywort, bacopa caroliana, anachris) to help out compete the diatoms for nutrients.
I've got wisteria, but it keeps melting on me. There are currently three planted stems that have yet to be affected by the algae/diatoms. I've also got compacta, water lily, java fern, banana plant, and a small sword (not microsword and not a baby amazon sword, no idea what it is). I've got some moneywort (or is it pennywort?), but its not in that tank, as its in quarantine for my 10 gallon. I have some small stems I might stick in there, though. As far as I know, no where near here sells bacopa caroliniana or anacharis.