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How big should a passive intake be to accommodate a 6" exhaust fan? The room is 392 cubic feet, a 6" fan is rated at 440 cfm, would it hurt to use a 8" fan? Also is it true that the bigger the filter the longer it lasts?

I lost the bookmark to this link

4 per square foot sounds a little over crowded to me, but i don't know that's why i asked.

Hanna 9813

Just get a money order.

How much room do the plants need? I am thinking 16 plants.

As the title states why is stretching bad, is it because it's harder to control height? or is there something more to it?

Thanx for all the interaction i was using a 3X3 tray under a 400 watt HPS, I did buy a 600 watt HPS yesterday and it seems quite a bit brighter. I also bought a 4X4 tray, a reservoir with cover, and another daisy cloner, getting ready for the next grow. Now can you tell me how many plants i can...

Title says it all, what's your opinion?

How much of a difference would a 600 watt HPS, compared to a 400 watt HPS be, is it worth the extra electric bill?

Yes the Dutchmaster brand, By mixing it with the Penetrator it won't mess up the leaves and the ph? Also i am about 1 month into flowering, can i still use it that far in and how often do you spray? And what's the latest you would use into the flowering period? I assume you don't wanna spray the...

Wondering if this is safe to use being it's a foliar spray? Does it really work?

I do not use nets pots, but am considering giving it a try, the reason i would use them is so i can rotate the pots for more equal light penetration. The question is after the plants have been growing long enough to have a root base where the roots come through the pots and start to penetrate...

I use FlorGro, FloraMicro and FloraBloom are these organic nutes? What are organic nutes and what is the definition of organics? What makes a nute organic as apposed to non organic?

Last time i tried to put rooted clones from a cloner into rock wool, it didn't work out to well. Can i just go from the cloner right into hydroton for ebb n' flow without the rock wool?

So when do you use co2 during veg and flowering?

Should you only rinse the probe in tap water or is it ok to rinse with RO?

I use co2boost but couldn't tell you what the difference is without co2 been using it from the beginning. I only use it during 12/12 i thought your only suppose to use it during flowering and not vegetative. Anyone have anymore insight on when to use co2? I thought it was suppose to make denser...

I was wondering the same thing, because i am thinking about growing weed and some vegetables together I remember something like the only dumb question is the question you don't ask. Hence there is no dumb question.

Thanx guys