So im trying to keep my fish together and need to keep it densly planted but it always kill my plants but refuse to use fake so i have to keep replacing them. The lights not that good and its about 3WPG. I have a fine sand based with no fertaliser. I was going to buy a CO2 system but there expencive so i heard that i could make one so im gonna find some instructions on how to make one. What can i do to help my plants grow? I have java fern on bogwood and lose wich i do well with with a marimo/moss ball & some weed sort of plants with some others wich i actually do well with! I also have some java moss wich grows really well in my quarantine but doesnt in my puffers & ottos tank it seems to dissapear im not sure if most is hiding but somes on my bogwood. Anyway is there anything that i can do do help them grow and be greener? I was going to get some harigrass and see if i could make a nice carpet of it but im not sure how i would clean it or how the fish would find there food etc.