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when I set my tank up I went cheap and used crushed coral for my substrate. Everyone told me I'd regret it. They were right. What's the best way to go about removing it and replacing it with sand?![]()
It can be siphoned. I did it to my old tank. Just get a large diameter hose like 1". Put a filter sock on the end and put that end in your sump. Start siphoning. It's not going to be a fast processwhen I set my tank up I went cheap and used crushed coral for my substrate. Everyone told me I'd regret it. They were right. What's the best way to go about removing it and replacing it with sand?![]()
why is crushed coral bad for substrate ?
It has a very large grain size that allows detritus to build up. Plus I just don't think it looks very natural.
Good luck on the move. It sucks that the seam is going bad, but if it was going to do that anyway, at least you can take advantage of it by replacing the substrate at the same time (imagine if you'd only noticed the seam AFTER you had done all the work to change the substrate).

