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Interesting. It does give the fish a lot of spaces to swim through. I have learned that limestone when used with plants and shrimp can be tricky because it tends to raise the gh and kh and possibly ph at times. Thats why im thinking i want to to steer away from it in some planted tanks, but it is perfect for just a fully rock aquarium like yours. Im sure some plants would do just fine with it tho.Definitely honeycomb limestone.