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I am setting up a new calcium reactor.

I need to secure the water feed line and effluent line somehow in the sump. This reactor design draws water in without a feed pump. It uses the hard plastic water hose that fits John Guest speedfit fittings.

What is a good way to secure the water hoses in the sump?

Also should the output hose from the calcium reactor drip into the sump from a height, or be submerged in the water?