Addition filter capacity - query

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Hi there Hennie I hope you can assist. I have a phosphate reactor from my old marine aquarium which is currently not in use as I have moved to a freshwater aquarium due to time constraints. Can I increase my current filter capacity (to support my external canister filter) with a fluidised bed of silica gravel? If not, what would be a suitable filtration medium in the fluidised bed?

Regards
OJ
 
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I have a phosphate reactor from my old marine aquarium which is currently not in use as I have moved to a freshwater aquarium due to time constraints. Can I increase my current filter capacity (to support my external canister filter) with a fluidised bed of silica gravel? If not, what would be a suitable filtration medium in the fluidised bed?
Yes, it should work very well - just use a very fine-grained sand, as that would result in the largest possible surface area for bacterial colonization.

Depending on the type of tank you're keeping, it might be advantageous to rather use a very fine calcium-containing sand (such as aragonite or crushed dolomite) to increase the water's hardness and raise pH for a rift-valley biotope (Malawi cichlids), whilst a silica-type sand would be more appropriate to an Amazon or far-east biotope with soft-water species such as discus, anabantoids, neon tetras, etc.

Hennie
 

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