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Running RH at 40-50% and selective pruning to keep the airflow through the plant high are probably the best ways to improve bud density. How closely you're packing plants in is related to this same issue. If you have a single environment 50% RH will work fine for everything but if you have a...

I've used 2700K 90CRI, 3000K 70CRI, 3000K 80CRI, 3000K 90CRI, 3500K 80CRI, 3500K 90CRI, 4000K 80 CRI. 70CRI produces the most vegetative matter in my experience, good for veg. 90CRI produces the most stretch. There are other minor differences but I haven't seen a notable yield difference based...

You don't need 465 watts. I light a 3'x7' veg area with two 150w lamps, about 75 par watts each. If you don't need full strength across the whole area you could plan for a 4x4 area and use the side light for rooted cuttings, seedlings, etc.

I read a couple pages. I have 5x 6 year old lamps with fans and oversized extruded sinks, still running strong. I did replace one of the HLGs recently. There's nowhere on the sinks I can touch and feel warmth, even right up near the cobs. All the fans and fan drivers still running, surprisingly...

I've been using Recharge going on a year now. I use Azos for cloning and switch to Recharge once there are some roots. Recharge is not suitable for cuttings.

The bubbles aren't going to contact all parts of the roots. I know someone who runs "sterile". They're very careful about sanitation, sealed room, clean clothes, clean hands etc. They've never had pythium but they do get slime build up. From what I'm not sure but it's never ruined their grows...

I would need to set up an experiment to see how much heat they add because my buckets are sitting on a concrete slab. Alternatively I could sit a bucket of water in the grow space and take a measurement for comparison. But several hours into lights on the water is 70 and air temp is 75. At least...

Thanks for the replies. The three dosages isn't a schedule, just seeing what PK values I can get while keeping the N near 100. I use tap water and have never had Cal/Mag issues so I haven't bothered to get exact with it. As far as phosphorus, I have read that commercial ferts use 30ppm but that...

So I had punched 2-12-26 into my calculator for part A instead of 5-12-26 I like 2-12-26 better, but 5-12-26 still yields some good results. 4g A + 1.5g B = 114/55/228 4.5g A + 1g B = 100/62/257

I bought a bag of Mega Crop single part, just playing around with the numbers. Looking at the two part I think it will scale well through flower. #/#/# is ppm in a gallon 4g A and 2g B yields 103/55/228 4.5g A and 2g B yields 106/62/256 5g A and 2g B yields 108/69/285 Using Single part and...

Buy them separately and you'll get a good fan and filter for similar price. If you're wanting a 2x4 consider the 2x4 at HTG supply (28"x52" 10sq/ft) or Oppolite 60"x32" (on Amazon 13.5 sq/ft) if you would like a little extra space.

I run a 2 plant 1 rez 3 bucket system. 3/4" tubing connecting buckets with rez in the middle. 2x 5w water pumps pump water from the rez to the grow buckets, gravity feed back into the rez. Conveniences; changeout and check/adjust PH from the rez. I still use airstones as a fail safe for the...

Yes, and yes, wire leads taped off = wide open. If you did want a specific dimming level on the cheap a resistor between them would give you a fixed dimming level; 60K ohm resistor = dimmed to 60%.

That was flip chip opto http://fcopto.com I just looked at the datasheet for the duet 2400w. The numbers are poor at max current (I didn't see a nominal current listed). If it was driven at 600 watts it would provide about 1.5 umol/j and 1.6 umol/j at 400 watts. The Apollo 900 at 520w is only...

Okay. So everyone is buying broad spectrum, making decisions on branded show grows or other anecdotal advice, and nobody knows the exact ratios to produce the most well rounded spectrum. All these lights with different spectrums and wattages, which to choose? It seems like bro science and brand...

I'm not anti UV or far red. Regarding branded grows, there is brand involved and it's not all about spectrum. Brand involvement is kind of shady. One thing I noticed and mentioned, if a 400-700 par meter was used to calibrate both lamps one of them is delivering more photons since they're not...

The grow you've pointed out seems to have done some things right but it's not exactly scientific or presented as such. Spectral analysis of each lamp along with some method to insure equal amounts of radiation would help. If proper equipment is cited, you have to trust the grower to provide...

I'm aware there's been a lot of advances in product and availability, and that's great. Anecdotal and first hand evidence isn't useless. Thing is, comparing one brand to another isn't going to produce a scientifically accurate result unless you can quantify the radiation with precision. I just...

Thanks for that. Wonder why he is skeptical? I notice they both have red diodes. The Amare has blue as well. That makes it difficult to quantify what's actually going on, but it's a good advertisement for both Chilled and Amare. The kind of study I'd like to see would include identical...

I'm starting to get an itch for those plant white CXM22s. I have a space to do a side by side with CXM22 in 3500K 90CRI. I already have the lamps, would just need to switch out the emitters on half of them. They aren't set up for dimming so I'll probably do that too. Use a kill a watt to get...