Hey I have a 20 gallon tank with a 15 watt "all glass aquarium" bulb with a little symbol that is a circle with HG in the center.
I do not do CO2
injections because I am not sure what I am doing and I have yet to get to a wal-Mart or other store I can get the DIY materials.
My question is what type of plant is this and it there any way you could help me diagnose the problem.
The plant is growing like a lovely water weed, I'd say 2 cm a day. But in the mornings the top of it is browned. Once the light has been on for a few hours it perks back up, but for the most part the top 2" is lighter than the lower.
I thought I heard somewhere that plants switch to oxygen input at night so I thought maybe with everything else in the tank it was "suffocating/drowning" so I added an airstone for lights out with no avail. All my other plants are lovely, lush and growing inexorably.
Any helpful hints?