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best small aquarium heater

1245 Views 1 Reply 2 Participants Last post by  Blue_Ram
any input on the best of these heaters please: (hydor theo)
(sera precision)

they will be for use in an fluval edge so size needs to be minimal hence the choice :help:
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I use the Hydor Theo. It is small and does hold temp pretty well. Just don't rely on the temp range on the dial, but that goes for all heaters. You should use an independent thermometor to determine temp of water column.
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