Have high ammonia or nitrate levels?? - try this

[frog girl]

Adding some aquatic plants like hornwort can really help with these problems & hornwort is a floater so its easy to incorporate.

check out this article for more info

www.aquabotanic.com/plants_and_biological_filtration.htm

 

[carpediem]

What about light and fertilizer requirements for these?

 

[frog girl]

since hornwort floats it actually gets a lot of light even if your wpg are low

I wouldn't worry about fertilizer to start with, its just a quick way to provide a bit of a buffer for fish in the tank. Its cheap & it does suck up alot of nitrogenous wastes.

You have to be careful of introducing other things like snails though (a 5% bleach solution (1 part bleach:20 parts water) can help with thus. Look up bleaching aquarium plants for more info.