I'm setting up a 10 gallons tank for three tiny coenobitas, and after spending the night reading the forum, I made this drawing.
https://www.instagram.com/p/CF9NSayD0nQ ... e1jnju9w9r
My plan is to put a 6,5 cm layer of river sand (in Spain there is nothing called "play sand", so the safest sand for sandboxes is river sand like this: https://www.bricomart.es/arena-de-rio-15kg.html , whose granulometry is from 1 mm to 4 mm; theorethically it's inert, but let me know if it's unsafe for crabs) where I will bury the freshwater bowl (clear blue), the saltwater bowl (dark blue) and the ISO tank (pink). In the freshwater bowl I would put some shells or a sponge to ensure the crabs don't drown; in the saltwater bowl I would make a hill with reef sand (0,5 mm - 1,5 mm) or put some reef rocks and a red mangle to purify the water.
The ISO tank would be partially buried and would have a mixture 5:1 of sand to coconut coir as substrate so it's easier to the crabs to dig without the tunnels crumbling. To enter in the ISO tank, I would put a wood with mosses and ferns that crabs would have to climb, but I don't think that's a problem for them. Under the wood I can put a coconut cave so they can hide. Finally I would add the food bowl and some shells, and I could also put a net on the back glass so they would have more surface to climb. What do you think?
And I have a question, where should I put the heat pad? On the back glass? On which part, the iso tank, the water zone or the middle so it will warm both zones equally?
Thank you so much!
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