AQUARIUM

Is a filter with a greater filtering capacity than an aquarium needs,better than suggestested filter tanksize?

EXAMPLE: A filter for up to 80 gal. on a 30 gal. tank. Will it keep nitrate level very low and allow for more fish in the tank? If so which filter is better a penguin or an emperor. Also, what about a protein skimmer and a powerhead, what is the best cheapest in the market for a 30 gal. What else would I need (for slatwater setup)?
::I have a 30 gal. tank, Stress Coat, Cycle, Quick dip testers, Hydrometer, salt mix, 10lbs of live rock, gravel, Aqua Safe, air pump.
The tank has been cycling for almost two weeks now with live rock and snails on an inferior filter, additives/water conditioners(Cycle, Stress Coat Etc.). I need to buy a better filter with Bio Wheel set up and a protein skimmer. If im missing anything let me know I could use the help.

My tank has been doing much better after I put a larger filter on mine. My levels have been much more controlled, and the water stays much clearer. I was using a 20 gallon filter on my 20 gallon tank, I switched to a 50 gallon filter and it seems to be doing wonders for my tank. My fish are all roughly 1″ and they don’t seem to have any problems swimming against the current. I can tell its definitely pulling more than the old filter, because any food that leaves the surface of the water goes for the filter pickup.

I asked a similar questions a while back right before I bought the filter, and was basically told you can’t have to much filtration.

my saltwater aquarium setup 1 day old

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