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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...

I want both of them! I'm not sure how much red I need so I'd use the datasheets to figure out what currents to run them with the same output and put them in a cage match against white.

He says one side looking better but no actual data, input wattage to weight/potency. It's an interesting grow but not the kind of controlled study that I'd like to see. https://www.luminus.com/products/horticulture Those cobs would be interesting to play with. And Citizen...

Nice. That was in January. Was the grow finished? I can't tell a difference by eye, would be nice to know final weight, purity, terpine content etc.

I recall a couple red based cobs, one was a red/white flip chip (?) or something like that and the other was a solid red cob. There were some compact PCB based arrays but they were really pricy! I would be interested in the small PCBs if the price was better. My interest would also be peaked if...

I've used (and have in operation) bare cobs, lenses and reflectors. My lamps are all 4 cob, either 12x12" or 15x15" emitter to emitter. I also have a couple CMH's running. I really like using the optics because the PAR readings are more sustained further from the lamps. They're all 50 watt...

I checked and still have a small coffee grinder I haven't used in years. Just processed a quart of Mega Crop in about 3 minutes... problem solved. Cheers

Thanks, the coffee grinder seems like a good suggestion, even if it's all in my head it will be nice to not need to be concerned about the powder/ball issue. I just did my first rez change, dissolves quickly. Faster than Maxi. At 5 grams per gallon I'm getting around 760 ppm (and my tap water is...