Please help with plants
I'm new to having a planted tank. My current setups are three 20 gallon long tanks divided into four sections to each house a male Betta. Each section has a sponge filter and water is heated to 80. Here is the story. I had black sand in my tanks that held plants for a little bit before they died. I decided to change my tanks to white sand and plants. I seeded the tanks with their old sponge filters as they had the good bacteria in them and those tanks were cycled. Got some plants in and next day they start dying and are dead by the next. All seem like they are just turning really pale in color and melting. Tested my water and everything seemed fine. The GH is a bit high, our water is pretty hard. No nitrites, some nitrates and no ammonia. Bought some new plants from someone else and they did the same thing. I'm using root tabs for the swords and also liquid fertilizer. I talked to a guy that I bought plants from and told him what happened. He said it sounded like bacteria or fungus. This is happening in ALL three tanks. I thought maybe it could be that or the sand. I decided to take one of the tanks and gut the whole thing. I disinfected it and place Carib-Sea plant substrate in and new filters. I went and bought Anacheris plants to see what would happen. They lasted a little longer but I put them in a week ago and they are already losing color and turning brown and soft. This tank I have been monitoring like crazy since it a fish in cycle. I have done partial water changes every two days for the ammonia spikes. Today I just bought a co2 system but its too early to tell if its going to work. I thought I was in the clear because the Anacheris didn't die after three days so I ordered more plants a couple of days ago that will be arriving tomorrow!! I don't know what else to do for the problem. Please tell me someone has an idea.