not as much as you'd imagine. If you set everything up right it can be really easy. I have a large ro/di unit that puts out roughly 100gpd and collects in two big bins with constant water movement. One bin then goes to the salt mixing bin and the other bin of ro water goes straight into the gar pond when I need to.
Which reminds me.
The way the filters are set up for both tanks I just turn some ball valves and it trains out towards the back of the quanset where no body needs to worry about it but the coyotes.
On the shark tank I do water changes every 2nd week. All three of the sharks are up around 2ft long now, which is close to full size, but being that they are the only things in the tank there isn't a whole helluva lot of bio load believe it or not.
The gar tank is merely topped up when I feel it's getting low (hahaha SO LAZY). Because the pond is constantly draining from the bottom the dirtiest water is being dealt with right away.
I can't guarantee that my half-assed approach to things would work for others though...I seem to be lucky in that way LOL
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75 gallon with 20 gallon sump in the works.
R. Bacchiega. Tattooer
I didn't smack you, I simply High Fived your face.
I've got so much glue on my pants it looks like a Friday night gone horribly wrong.
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