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The filter is 30x16 I'm lookin for an exhaust fan

My room is 8x8x7 with a 1000 watt in it what size inkline fan do I need??

When I'm lookin thru my scope at the trichs what part needs to be cloudy/milky?Is it the top round part or the whole trich?Because just the top part of mine are cloudy.Thanks in advance for any help I get

I'm nearing the end of my 1st grow.I have a bit of a situation.The plants I'm growing according to what I've found are at the end of their flowering cycle.But I'm at the 2nd week of using cha ching that should be a 4 week cycle.My plants are on the small side,the buds are stil growing with resin...

It`s like some people have some yrs. under their belt and forget that they ran into problems when they started.I just find the people that are helpful and contact them instead of putting up a thread that will be made fun of.RIU is an awesome site for noobs/"green"horns like myself.Just don`t...

Do yourself a favor and don`t buy from igrowhydro.com.They have no customer service and are not willing to go the extra to help their customers.I bought a system(2 extra weeks wait) from them and I think my ballast has a problem and I wanted to do an even exchange.They are not interested in...

Thanks for the input I'm gonna save up for a digital and keep the buzzer for a backup

I have a 1000w Luminator magnetic ballast.I plugged it in on Monday and it buzzes really loud not humming.Do some magnetic ballasts do this or does mine have a problem.I contacted tech. support they said it could be a bad igniter,contacted the company I bought it from(igrowhydro.com) they said...

I'm in my 4th week of flowering and I want to change the light cycle hrs.the light is on from 6a-6p I want to change it to 10p-10a.I'm tryin to save energy with the light bein on when power usage is low.How can I change the power on time without shocking the ladies.Or should I wait it out til...

When I bought my hps bulb (400w) the guy took an engraver and put a couple spots on the metal end.What does that do to the bulb?

I`m growing under a 400 watt hps 2nd week of flowering,I ordered a 1000watt for my next grow.My question is can I put the 1000watt over my current grow or will it shock the plants?

My first grow 2nd week into flowering.I have a 400 watt MH/HPS now,but I have a 1000watt MH/HPS ordered.I`m asking will my plants go into shock if I hit`em with the 1000watt or do I stick with the 400watt until harvest???

This is my 1st grow (still growing) I`m thinkimng ahead to curing.I`m growing in my basement and want to hang and cure in my attic so the house won`t stink.My attic space is kinda cold around 50 degrees(it`s winter).Will the low temp mess with the curing I haven`t read anything about the temp...