Plants sickly, African Dwarf frogs in the tank
Hi. I have a 10 gallon tank with 5 African Dwarf frogs and 4 plants. They were all in the "easy" and "low light" section of the store. I don't know what kind they are, one I think is Anubias, one is a tall grass, one is a short bush thing. One is tall with circular leaves. That one is sickly. The older leaves are yellowing and then become transparent and fall off. The tall grass has transparent patches on it as well. I had another tall grassy plant in that spot and it got yellow & transparent and died. The spot the sickly plants are/were in is next to the filter. The ammonia levels are ok. I don't have a test kit for anything else. I change the water about 30% weekly and vacuum the sand weekly. The tank is 2 months old. I just have sand as the substrate.
Are nutrients the problem? Anyone know if I can use fertilizer with ADFs in the tank? I want to avoid tearing down the tank and putting new substrate, so what fertilizer would be ok for the frogs?
Is it light? There are two fluorescent bulbs in the tank that give off a yellowish light. The plant that is sickly is the furthest away from the window... Should I buy a better light, or would that be too much because these are "low light" plants? And I don't think the frogs want too much light either?
Obviously I am a newbie and doing my best to do everything they told me at the store! My frogs eat bloodworms once a day if that makes a difference. I don't have any algae eaters but it doesn't look like there is much algae. I dose the tank with Stress-Zyme weekly as well.