Dehumidifier Help...?

First off, I am very green to all this (he he he) so please forgive me. This question has prob been asked over n over, but... I am trying to tweak my environmnt to keep my girls happy throughout every stage of their lives. Long n short: I'm in Week 6 of flower and I bought a 70-pint dehu to keep my ranges in check (between 40% - 50%). It's all good while my lites r on, but when they shut off, my humidity can spike as high as 54%. I know it's not the most horrible of situations, but I was wondering if I should get another 70-pint dehu n run it on continuous as I do the other one or not. ANY HELP WOULD BE APPRECIATED, Thanks!

50-60% at night is fine if your temps stay above 70 degrees AND YOU DON"T HAVE A COLD SINK!! Like a cold wall or exposed cold pipes or cold window. You know something that will draw condensation.

Uncle Reefer said:

50-60% at night is fine if your temps stay above 70 degrees AND YOU DON"T HAVE A COLD SINK!! Like a cold wall or exposed cold pipes or cold window. You know something that will draw condensation.

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nope, nothing that'll draw condensation. my 'nite' temps are in that neighborhood...maybe 68 or so. what about for my final weeks? do u personally cut the humidity to <40% ?

Nope, no need to get it that low, under 50%-60% will do

It would reduce chances for mildew and the like, to drop temperatures and humidity towards the end.
If you were growing in a sterile environment, you could follow VPD charts more closely for more optimal growth.

ANC said:

It would reduce chances for mildew and the like, to drop temperatures and humidity towards the end.
If you were growing in a sterile environment, you could follow VPD charts more closely for more optimal growth.

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thank u, but what r 'VPD' charts?