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I've seen people say it's fine and others say there are bonding agents whatever used in manufacturing so don't risk it. I can say I've used concrete pavers in a large stock tank with koi in the past with no issue, but I also wouldn't risk it in a reef tank. The peace of mind is worth the extra $ for proper rock, IMO.
What do you know about spray foam? I seen a YouTube video and a guy was making caves with that.I've seen people say it's fine and others say there are bonding agents whatever used in manufacturing so don't risk it. I can say I've used concrete pavers in a large stock tank with koi in the past with no issue, but I also wouldn't risk it in a reef tank. The peace of mind is worth the extra $ for proper rock, IMO.
Never used in saltwater, but “waterfall foam” (https://amzn.to/4c4miK7) is supposedly completely non-toxic once dry and I have used it in a pond for goldfish and koi in the past without issue. Just make sure it’s fully cured before getting it wet.What do you know about spray foam? I seen a YouTube video and a guy was making caves with that.
Thak you.Never used in saltwater, but “waterfall foam” (https://amzn.to/4c4miK7) is supposedly completely non-toxic once dry and I have used it in a pond for goldfish and koi in the past without issue. Just make sure it’s fully cured before getting it wet.
My whole back wall and small cave are regular old spray foam and Krylon paint. Been doing this for years with no issues.What do you know about spray foam? I seen a YouTube video and a guy was making caves with that.
That's beautiful. Thanks for the tip on the spray foam.My whole back wall and small cave are regular old spray foam and Krylon paint. Been doing this for years with no issues.
All spray foams are made from the 2 basic ingredients. MDI and Polyols.
Once cured, essentially inert.
A guy at work showed me this item. I'm going with my gut and I believe you with just spraying it with fusion. After all,you've probably been doing this a while and I trust most people on here and that no one is going to try and hurt someone's fish. Let me know what you think of the product. Thanks.That's beautiful. Thanks for the tip on the spray foam.