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[midlifegardner]

I have a DTW automated system with a 60 litre res. It's all black with just a couple of holes out the top for hoses and the lid is left slightly ajar for the pump cord. No light coming in from what I can tell via those 2 openings.
I do however get a slight algae build up on the hoses and pumps. Worried this may become more of a problem.
How often do ppl clean their res out? Do you scrub everything every couple of weeks? Do you add a maintenance dose of hydrogen peroxide(good for roots too I heard).
MLG

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