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My yield has been consistent at 0.17-0.18 g/w at 56 days of flowering as the seed bank recommends. It should be obvious that I need to start using more then AN grow-micro-bloom. In all likelyhood I've mastered this thing by now. But which one do you think would help the most, BigBud, Overdrive...

I'm ordering my seeds by mail. Thought if the cold weather can damage them. Right now, after a week of germinating, I have a sprout rate of 3/8 with a fourth seed slowly growing out of the rockwool. Could it be they have been too frozen in the mail?

I've had major yield issues. Not once have I exceeded 0.3g/w. I'd like to know what I'm doing wrong. -My grow system is a Wilma 4 XL. I change the water once a week, and I also flush the tank to get rid of as much of the old water as I can. -Temp shouldn't be an issue during the cold months...

Normally I go like 8-10 weeks, but this time I suspect I can harvest as early as 6 weeks. I just upgraded from 400W to 600W HPS and the plants are about to collapse under their own weight. What could be the harm in an early harvest like this?

Does anyone have any info on which DR growtents have ports specifically for CoolTube lights? Sorry but many grow shops and websites are a bit scetchy on this subject and I want a tent that has can easily handle CoolTubes.

I adjusted the timer to my feed pumps to pump less and more seldom. Now they are on like 30 minutes every 6 hours. And the foul smell is gone! Turned out I overwatered after all!

Right now I have two 3*3-feet tents with Wilma 4's inside. What I intend to do is to upgrade to a single 5*5-feet tent and have a Wilma 20 inside that. This means that the area for each plant will be roughly halved. What does this mean in practice? Can I, for example, still use the lower buds?

My grow is producing far too much moist air for my apartment, especially since I upgraded to 600W HPS. Obviously I cannot vent outside since the replacement air would be too cold. The moist will damage by apartment, and also produce a horrible smell. What could help with this? Larger fans maybe?

You wouldn't want to have anything else then a very modest grow operation without ventilating your apartment. If you don't ventilate, the same air would simply circulate, get moist and produce mold. Not good. You need to dump the exhaust air from your grow tent out.

I germinated my plants in coco to and moved on to my diy bubbler as soon as they started to look too poor. Then, when my renovation was finally over, I ordered some more hydroton and put them in my Wilma. Now here's the thing. That was 9 days ago and already they grow like crazy. They have...

I've had casualties when I've put seedlings under a strong HPS light too early. Googling around says you're supposed to do it as early as possible to make the plant more used to that much light.

I understand there are opinions regarding this as well. You won't want simply fill up as the plants drink, so how often do you flush the reservoir and change the water?

Should tear down my grow tents or is it sufficient to hide the plants and shut down the fans?

Experimenting around with my Cooltube reflectors, I clearly feel that they don't heat up practically at all on the outside when used with a fan. In my judgement, this means that they would not heat up the inside of a tent at all and that I would need only a small-ish fan for the tubes and an...

Last I got to know that the house is going thru a bit of renovating this fall. No worry, since evidently the contractor is interested only in the outer wall and his workers won't be using my toilet or anything. This time I've got a handful of plants vegging in coco and very small pots. Do you...

I might have done a goofy mistake again. I germinated far too many seeds, and now I have enough plants for several grows. Problem is if I let them grow normally, they outgrow my tents in a month. What I really need now is to limit their growth so that I can put them into flowering in three...

As stated previously, I've had major problems with cloning. At best one in ten clones have survived, and at worst none of twenty. After another attempt with a FT, I took my last two surviving clones, put them into a plastic mug of tap water (no Clonex or nutrients) and put them under a 600W HPS...

I have some old light systems I'd love to get rid of, and selling them is not an option. We're talking about 400W HPS lights with built-in ballasts, originally intended for outdoor greenhouse growing. They have always been impractical and I would love to get rid of them. Would I "need" to...

Can you use ordinary Advanced Nutrients Grow-Micro-Bloom with coco? They have a separate product line for coco, but I wouldn't want to buy that until my current nutrients are finished.

I might be giving coco substrate a try. There's still always the question of yield, which I couldn't find an answer with on Google. Does coco give any less of a yield in your opinion? Obviously I'd have to water the plants far less then 30 mins on-30 mins off, right?