Who Gives A Fish Forums

Thanks for the advice, everyone. I'll try placing it near the filter outflow and see how it goes. It's an Aqueon Pro heater, by the way.

I just got a new heater for my 20 gallon tank, but I'm not sure where to put it. Does it matter if it's near the filter or not? Also, should it be horizontal or vertical? I don't wanna mess up the flow or anything.

Rotala can be finicky with lighting and nutrients. What's your nitrate level? If it's too low, the plant might be starving. Also, check if the light is strong enough. A 20 gallon with a sponge filter might not have enough flow for nutrient distribution.


Nitrates are around 10 ppm, so not super ...

My Rotala is losing leaves like crazy, and I don't know why. The tank is a 20 gallon, with a sponge filter, and I do weekly water changes. The light is on for 8 hours a day, and I use root tabs. Any ideas what's going on?