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Here's some tools I use , I'm old! The stick is to check water level , it's marked 4 5 6 gallons. And on the end is a cup to pull the water and check ph ppm without lifting the lid, fits through an empty cup hole . Also that's a bilge pump in the bucket , 15 strokes and new water into the res. I use an electric to empty it pumps out through my window into the outside garden.
also no lifting the lid.