Just discovered that we keep the old pool filter sand we use under the steps in our pool and there's 12 bags of perfectly good stuff behind my shed. I have two major questions about it though. Assuming it won't change my pH (testing it overnight).
1) Will plants be good in it assuming I have good lighting and water?
2) Is the grade (#20) ok to keep Corydoras catfish or is it to coarse?
1) Will plants be good in it assuming I have good lighting and water?
2) Is the grade (#20) ok to keep Corydoras catfish or is it to coarse?