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It's a corrupt world. I wouldn't put it past them to "lose" the results they didn't want to see if they really want to hire you. AFAIK, all this testing is being done mainly at the behest of insurance companies.

No bone to pick. Pro-mix BX is pretty foolproof. Any pH between 5.5-6.5 is going to work great with it. The only reason I amend it is because either I want to increase the water retention capacity, create an organic soil, or both. Various amendments also greatly affect the "wicking capability"...

"It's pretty common knowledge that 6.5 is ideal for soil and 5.8 is ideal for hydro." I agree: Pro-mix BX isn't soil. It is a soil-less mix. Therefore, the hydro pH would be correct for it.

Pro-mix works fine right out of the bag, but it is commonly amended and the manufacturers have nothing to say against it. In any case, you are basically claiming that the Pro-mix manufacturer is shipping a product that needs pH adjustment since they, the professionals, didn't get it right...

There was a guy on here - kiteflyhigh I think (now deceased) - that did a LOT of research and testing on UV stuff. He actually had the finished product lab tested. Finding was that certain UV lights did increase product quality...marginally. However, the average smoker would probably never know...

To expand on that a bit, consider rockwool. Whether slab or block, at the end of the grow you will be surprised to find that the bulk of the root mass is actually outside the rockwool. This is most notable on slabs. It appears that the rockwool primarily acts as a nutrient reservoir in a kind of...

No, I think it would be more accurate to say that I think root pruning - so to speak - is of marginal benefit for a plant that is only going to be alive for 3 months, indoors. And that due to the accelerated evaporation factor of the air pots, maintaining appropriate soil moisture levels is more...

Four 3 gallon trump two 5 gallon as you will get more colas with less veg time and thereby attain higher yield. I have used a 400w HPS in a 2x2.5 tent and it was fine. Edit: Due to the height limitations of these smaller tents, you won't veg long, maybe not at all depending on the size of the...

Plant directly into your final container. The only reason I would do otherwise is if I had space limitations and multiple lots of plants in different phases of growth. In other words, if the veg tent was 2x3 and the flower 5x5, the veg plants would have to be in smaller pots to fit in the tent...

Disagree. There is considerable evaporative loss on both the fabric type pots and unglazed clay pots. I'm talking about, say, a 1.5 - 2 gallon container with a finished plant height of around 24-30". I must have missed the part about greater mass, pretty sure they merely stated that the plants...

Since you are not going to be designing light bulbs, you don't need to worry about PAR, PPF, or PPFD. All commercially available HID lighting will grow plants just fine. Get the highest intensity light (currently HPS DE) you can for your space. What you need to be more concerned about is what to...

I use 1.5" rockwool cubes because they are sterile, have an optimum air/water ratio, and won't dry out too quickly. Because seeds can be hard to get, I take the extra step of working up some rockwool flakes with a toothpick and placing them over the top of the seed. If the seed is viable...

Why is that a good thing? I want more root mass, not less. The plant is only going to be alive about 3 months max, so longer term effects of "root circling" are not an issue. My experience with air pots of all types is that they dry out too quickly. Same goes for unglazed clay pots. Optimum...

Pro-mix BX is pH adjusted during the manufacturing process. If I use it straight out of the bag, I usually pH adjust the input water/nutrient mix but that is probably not even necessary unless you have some weird water source. Normally, however, I cut it with sufficient organics that it doesn't...

I think they are just testing to be sure that she is taking the prescription medicine. The idea is to prevent diversion. It's a dumb idea, because they have no real way of telling if she is doing a partial diversion. That, and the piss tests cost a lot of money. My state did this and it cause...

A decent 600w HPS SE bulb is fully sufficient for a 4x4 tent. The reflector does not have to be air cooled, but you will need to exhaust the air from the tent, probably continuously. A DE bulb is a bit overkill for such a small tent. I doubt you will find a DE setup in Europe that offers a...

Experience. It works, mainly because of the b-cyfluthrin. The imid takes time to be absorbed by the plant. Short-term use of the product should be no problem and bees are not a concern here.

DE = double ended bulb, SE = single ended bulb.

Wow, you have a serious problem. I am skeptical about both the "gimmicks" and the painful implementation of same that likely won't do shit. Go magnetic or a DE unit that has the ballast connected directly to the reflector. DE rocks, but you must have the ceiling clearance/climate control to do...

First off, most modern ballasts - excepting Chinese cheapies - are RFI reduced at the ballast. Such ballasts will have an FCC sticker or emblem either on the ballast or the documentation. If your ballast doesn't meet this standard, you are out of luck on reduction tactics. If the ballast itself...