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For the past two years I've been storing spore prints in the freezer for long term storage however I've been reading conflicting reports on freezing spores. Are these spores any good?

My cobs are getting old and would like to replace them with led strips preferably ones with the highest lumens per watt “lm301”. I’ve tried looking for them on mouser and arrow but get lost in the 100s of pages. Would like to keep the strips at 3500k 2 foot long. Already have an idea for drivers...

Need help finding a driver for a single Citizen CLU048-1818 90CRI - 3000K Output voltage- 47.8- 56.2 Wattage- Anything from 35-80 watts , doesnt matter if its constant

I have noticed when i run dwc/hydro my grows require lower ppms than my coir grows. Its at 300 ppm by this stage in coir im usually running 400-550. Was wondering if hydro needs less nutrient than coco/coir? Method= dwc five gallon cooler, thermostat, ice probe chiller, two large...

I have one female and one flipped male however the female plant has been blooming for about three weeks while the flipped female is has about three or four more days before "he" sprouts viable pollen. Is it too late to pollenize? How long is too late to pollenize to make seeds? Some of the...

I've seen a vid on YouTube were one guy "Mr. Canuck" used only organic nutes and coir with his grow with amazing results. His plants looked healthy and his method looked simple however the type of organic nutes he was using is not available in the states. The only organic nute i have found to be...

Just as the title says, I am paying cash to seedsman but the address is at Broomfield, Co. Thought this was an overseas company so why am i sending my payment to Colorado?

Second pass bho, is it worth it and what to expect?

Always paranoid about using too much calmag but sometimes it's not enough and end up with the usual calcium and magnesium deficiencies, especially during the seedling stage. Questions; 1. Do you measure the ppm before or after adding cal-mag? 2. Do you increase cal-mag during different stages...

Small time grower here looking to be more efficient. Since i run one plant at a time I don't need to power six cobs at one time during the seedling stage. I am trying to find a driver to power one 36v cxb3590 and having a problem finding one. Any suggestions?

I have been using fatsmans coco coir recipe for a few years and have been doing great. However i would like to try some other recipes for the hell of it and do some comparison grows. Added= I am mentally challenged when it comes to breaking down %s of compounds so a simple recipe would be...

In optimal conditions in the perfect situation which is better in terms of yield, outdoor or indoor when it comes to autos? Im sure the plants love the sun more than indoor lighting HOWEVER the sun isnt on 18 - 24 hours a day. : )

Here is the best possible way IMO to cool a small or large insulated dwc reservoir. No moving parts besides the fan and takes about 15 to 20 minutes to install. In the middle of summer at 100f it will run about 5 to 7 hours a day costing about $1.17 to run per month. I set mine at 66F and it...

A seed is a living thing, it will consume its stored reserves over time if not properly stored. The only way to stop this process is to freeze them or you can significantly slow it down in the fridge. I have heard all types of rumors about loosing germination rates during the freeze and thaw...

If it wasn't for rollitup, members, and especially the unmatched LED section on this site I would most likely be trying to grow with incandescent "grow" bulbs, miracle grow, and potting soil from wally. Information such as ph, ppm, strains, security, seed banks, lumens, nutes, disease...

Lumens, Par, Watts, and etc. aside which light performs best for indoor grows?

Have two red poison seedlings that almost took a week to pop instead of the usual three to four days. Normal for this strain? They also seem to be barely growing, everything is dialed in. Coco coir/perlite= 80/20 Nutes = 200 ppm temp= 78-82F

How many cxb3590 running at 40 watts each would I need for a 3 by 3 grow space?

Ebay has only one listed and its almost $40. Does anyone know where to get one within reason? Kingbrite has them listed for 12 bucks but the minimum order is 5, just need two.

Several dealers on alibaba are listing cxb3590 cobs for around a dollar or two, what gives? Some of these sellers have been around for years with high ratings. Is it shipping where they rape yea?