bobofishman
Aquarium Advice Activist
I am starting a 90 gallon project I am building a 3d background and would like any tips people have .. I am using styrofoam and hydraulic water stop cement from quikrete... I started shaping my styrofoam today and I want to build caves and ledges in it.. So far looks good just not sure about the concrete leaching and how long will it do so? I here mixed reviews on how long some people are telling me 5-9 days and others are telling me a month . I plan on soaking the background for a week before even mounting it in the tank. Then fill it with water and watch my water perimeter for a week and see. Any suggestions ?????