Swampman
Aquarium Advice Activist
Hi I set up a 37 gal aquarium 3 weeks ago. It has a canister filter,led light, heater and plant nutrient substrate. It has spider wood that I didn't boil. The second day the tank was up I started to get brown slime on the spider wood. The tank is heavily planted. Than the slime started growing on the plants. I took out the spider wood and boiled it. Thinking that was the problem. I did a 20% water change on Sunday. Today Tues. the slime returned. I am cycling the tank with 7 Von Rios. What can I do to get rid of this stuff. I set up 4 other tanks and never had this problem. What did I do wrong?