Question re plants and cleaning gravel
Question- I've had low level ammonia problems (6.4) in my tank for months now, and I'm thinking it may be due to the plant detrius in my gravel. Today I removed about 3/4 of the gravel and washed it out thoroughly, but I left the gravel my java ferns have rooted in- and still, ammonia of 6.4. (I also did a 50%- 75% water change.)
Should I gently remove the java ferns from the gravel and rinse out the rest of it too, or will this hurt them? Do they need some kind of stuff in the gravel?