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I've been catching up on this grow. Do you always use hydrogaurd and z7? I'm thinking of picking up some hydrogaurd and using it alongside my z7. is that a waste?
We could probably get by with just one or the other.
However I have the greatest faith in H-guard when it comes to protecting my plants from high reservoir temps.
And the Z7 makes cleaning the buckets easier but I've never run it by itself to see if it will protect my plants when the reservoir temps hit the 78-80°F mark.
For the amount I grow it is cheap insurance.