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Do I understand you correctly that you put the fluence 2i fixtures 36" above the canopy for flower? You do realize that the suggested height above the canopy in flower is 6 - 10". Even if you wanted to condition the plants for a couple of days you wouldn't want to be more than 18 - 24" up to...

I believe this 10 bar fixture is designed for a 5x5 flower area. https://mammothlighting.com/products/copy-of-10-bar-fluence-style-led-grow-light-etl-listed-with-time-and-dimmer-control-panel You should also take a look at the Fluence Spydr 2i ... I've had phenomenal results with it in a 5x5...

Here are 2 suggestions for you ... both US companies Fluence SPYDR 2i is generally recognized as the best light on the market. If you're not using CO2 the 2p is a good choice as well and a bit less expensive. https://fluence.science/products/spydr-series/ Mammoth offers some interesting...

Autoflowers seem to have even more pheno variation than photos in every pack ... so you'll have terrible time managing the canopy and flower quality. Beyond that, you'll be buying every plant which will add significant unnecessary costs to your project. So unless you plan to learn about tissue...

Puresativa.com. Not US but great stock.

Some of the newer LED fixtures are adding UV and in some cases far red too. Sadly the meme from the computer industry applies to LEDs ... If you can buy at retail it is, by definition, obsolete.

I think the 550 has a better spectrum and higher ppfd (at full power) than the 600W MH or HPS ... which means your plants will probably need more of everything in order to support a higher rate of photosynthesis. Comparing them to the plants under the T5 isn't indicative of anything since the...

And you should check out another US Mfr that's competitive with Fluence https://mammothlighting.com/products/new-preorder-mammoth-lighting-fold-series-800w-600w-samsung-lm301b-diodes and the new model with UV bars...

Hydrogen peroxide 3% solution (most supermarkets and pharmacies) is a great non-toxic options for PM. An initial full strength saturating spray will work wonders, but it will burn/discolor the leaves. Subsequent treatment with 1/2 strength solutions (1.5%) will help keep things under control...

Take a look at https://mammothlighting.com/collections/frontpage/products/new-uv-series-10-bar-led-grow-light-8-standard-2-uv-bars-740w-with-dimmer-knob-rj-port-uv-switch. US company in upstate NY. Bars are self contained. If one fails the others keep going.

I haven't read this entire thread, so I apologize if this is redundant, but I think this article might have be of some value. https://mammothlighting.com/pages/why-uv

The only issue you may have is that hydroton will absorb nutrients over time while perlite stays inert after washing

Look for #3. It's a little bigger, less likely to break down, and usually less dusty ... and if you let the plant stem and roots dry out before emptying the bucket, you should be able to reuse it without a problem.

Probably not ... the runoff PH is usually higher than the input.

From what I've heard, the carrier is supposed to collect a 30% tariff on Chinese imports ... but the present administration is more changeable than New England weather so just be prepared ... and FYI, "bill me" probably isn't the best answer.

If you're not in a rush, check out Little Chief Collabs https://www.puresativa.com/cannabis-seeds/little-chief-collabs. The first 3 crosses they've released should be right up your alley. There are a ton of great breeders that have come up over the last decade but puresativa is a good place for...

you have a 10 liter plastic pot with drainage holes in the bottom and clay pebbles in the bottom ... so you probably have less than 8 liters of coco. that's not a lot of growing medium to retain moisture for the root system. Don't know the strain but you should consider getting a 12-15 liter...

And PPF is NOT the same as PPFD. They claim 2159 PPF which would then be reduced by some percentage to get the PPFD depending on the area of the grow. For a 4x4 or 5x5 that would be somewhere between 1700 and 1800. Quite doable with today's technology

2 things First, you need to be sure of YOUR facts before stating that people are lying. I think a more accurate statement would be that based on other lights you have looked at you don't understand how they have achieved these results. Second, I don't want to hijack this thread but you have a...

Why don't you contact them and ask? They're in upstate NY. Or is it easier to just have opinions?