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what is the bare minimum of reef saver rock i can use to aquascape a standard 20 gallon aquarium. filteration should not be much of a concern as i have a canester filter packed full of bio media rated for a 70 gallon and will upgrade to a sump very soon, and i have a 1.5 inch sand bed. i was recommended 0.5 kg/ 1 lbs per gallon but can i go much lower than that. its a fish and invert only system and i will not be adding coral as its illegal in my area. thanks!

hi! i have a 20 gallon reef with pair of clownfish 3 hermit crabs 6 turbo snails 1 GBT anemone i just started keeping saltwater tanks but kept freshwater tanks for 9 years prior. any suggestions for more fish? NO CORALS AS THEY ARE ILLIGAL IN MY AREA, Thanks!

This is a (Very Long) list that i have made that includes all of the nano reef safe fish that can live in a 35-40 gallon tank that i can think of, if you can think of anymore please let me know. 🐠 - Firefish - Purple Firefish - Helfrichi Firefish - Exquisite Firefish - Neon Blue Goby - Hector's Goby - Green Clown Goby - Black Clown Goby - Yellow Clown Goby - Greenbanded Goby - Orange Stripe Prawn Goby - Orange Spotted Goby - Wheeler's Shrimp Goby - Two Spot Goby - Yellow Watchmen Goby - High Fin Red Banded Goby - Yellowhead Jawfish - Blue Spotted Jawfish - Black Cap Basslet - Royal Gramma - Panamic Barnacle Blenny - Court Jester Goby - Eyebrow Barnacle Blenny - Spotted Croucher Blenny - Pygmy Coral Croucher Blenny - Pajama Cardinalfish - Bangai Cardinalfish - Coral Beauty Angelfish - Blue/Green Chromis - Ocellaris Clownfish - Percular Clownfish - Mandarin Dragonet - Sixline Wrasse - Pygmy Hawk - Tailspot Blenny - Orchid Dottyback - Midas Blenny - Pink Skunk Clownfish - Chalk Bass - Flame Hawk - Catalina Goby - Sharknose Goby - Bluestripe Pipefish - Flameback Angelfish - Candy Bass - Algae Blenny