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Hydroponics CANNA ADDITIVES PK 13/14 Plant Nutrients 5L Litre

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Water level

Hydroponics / Aeroponics
Water level
Hello, I have a 2 site RDWC UC setup and I was just curious about water level for seedlings vs veg.
What I have read is that when they are younger, you raise the water level up into the netcup a bit to allow the hydroton to stay wet, but once they are rooted a bit you lower it to about 2-3 " under the netcup?

Also, Should I change this res out after only 1 week? It seems like its done nothing but recirculate. The plants haven't really been feeding off it, other than what ive been hand...

Water level

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