Looking for a Hydrometer and a canister filter.

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Originally Posted by Aquattro

I'd keep away from canisters on a reef, they tend to not get maintained enough and will generate nitrates. They're more suited to a FW tank, or even fish only, but not a reef. Some would argue, but most would agree.

I know and I have heard multiple opinions on this but I will not be drilling my tank to run a sump. and don't want a HOB filter as I will be getting a HOB skimmer.