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  1. RolyMo

    Volume calc for substrate

    Hi I can see the other post, but could not see the volume calc. I have a 36 x 22 x 26 tank which I am going to be setting up for CRS shrimp. Is a 3 ltr bag of substrate enough or should I get a 9 ltr bag. Or better off can someone show me the calc. Want to have some landscaping but clearly not...
  2. RolyMo

    Do I need to replace my Tropica substrate after a year?

    Just curious, as its coming up to 1 year with my first tank. It has a 1cm layer of Tropica substrate with white/cream colour sand on top. Medium planted. Does the substrate loose its nutrient qualities? Should I be replacing it ( not that I am in a hurry)? Thanks in advance. Roland Sent...