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Discussion Starter · #1 ·
hi, i have a trigon 350l reef tank and am running a fluval 405 filter with ceramics, bioballs, carbon and filter floss and also a small sump with bio balls, cheato algae and miracal mud, aldo have a hang on prism skimmer. The problem is that the nitrate is at 20ppm before a 20% water change.

How many hermit crabs do i need for this size tank at the moment i only have 3, also turbo snails (have about 5 and loads of tiny baby ones)

would the fluval filterbe the problem as when i clean the filter the floss is very dirty where its catching all the wasted food
thanks guys, hope you can help
 

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I've got the REEF rash!
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If you get rid of your canister and eveything in it,and a better skimmer.your trates should get better and are you using RO/DI or distilled water for your WC and top-off?
 

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Discussion Starter · #3 ·
i use ro water. i have switched off ther canister filter and added another 12 turbo snails, do i need more and how many hermits? thanks
 
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