heater in the sump

llama

llama

New Member
I am putting together a 90 gal setup with a wet/dry filter for the first time. (I'm graduating from canister filters!) I heard that you could place a submersable heater in the sump of the filter to heat the entire tank. If I choose to do this, does the heater still need to wattage for the 90 gal (300 watts) or can it be less being my entire filter system is about 11 gallons. Any help/comments will be appreciated. Thank you.
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