Adding additional biological filtration to support fish

[plankton]

I have a 25G nano that's several months old now with thriving SPS. I have three fish (percula pair, six line) and one cleaner shrimp. I have 15 pounds of live rock and one 6" maxima claim as main filtration and large slimmer to help remove protein and fats before they decompose. However I'd like a couple more fish so added 10 more pounds of LR in sump and deep sandbed. I have no idea how long a DSB really takes to cycle but guesstimate is 1-2 months?


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[plankton]

Seeded rubble, chaeto and added grow light.

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[ahuaia]

I personally love matrix in a media bag in a hight flow spot.Soak it in microbacter bacteria or whatever you preferred beneficial bacteria is for a few hours and your good to go.

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[Adamg77]

Brs sells media blocks which have millions of square inches for bacteria to grow in. It comes in blocks and you can cut to fit your area. What's the dimensions on the tank? Footprint is more important than gallons when it comes to swimming space. You most likely won't have a problem with filtration more of an aggression problem depending ont he species.