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I don't think so. At $0.12 a kw/hour it costs $292 a month to run 5x 1000w HPS lights. Plus some change for the extra 50-100 watts the ballast wastes. https://www.hydroponics.net/learn/hid_lamp_op_cost.php https://www.rapidtables.com/calc/electric/electricity-calculator.html

Sorry dude. I just want growers to be aware of this stuff. I just think it's worth anyone's while to maximize their setup. If commerical growers didnt factor all this shit in, they'd be loosing thousands of $ a month.

I think $150 a month is bullshit if he's in the US.. The cheapest electricity in the USA as far as I am aware is something like $0.05-0.06 a kw/hour. And all the BTC mining companies flocked over to where that is and made them regret charging so little. But they have a huge hydro power system...

Smart man. Especially if he has multiple lights. The 2-4% output loss in 3 months (1 cycle) on a 1000w HPS bulb can equate to 10-40 grams of lost yield potentially. Even if you only loose 5 grams of bud, that just about pays for a new eye hortilux bulb in itself.... 40 grams would pay for 4 or 5...

1. That's a subjective experience. If you put a 600w HPS in a 3x3 tent, it will put out a lot of heat. Directly cooling it with vented hoods/cooltubes is pretty much required in such a setup. And it will still give you fairly high temps unless you are sucking 400cfm out of there... You shouldnt...

Ah okay. Yeah I see my mistake now. I for some reason doubled the running cost. A 1000w HPS ran on average 16 hours a day costs $56 a month @ $0.10 a kw/hour. For me I am 12 cents so $64 a month. But still, you'll pay for the light in electrical savings in reasonable time. And a lot of HPS...

Lol what? What are you talking about? Are you going to address anything I said or just say it's "lies"? I just clarified in the post above as well. Nothing ive said is wrong. Maybe some subjective opinion but I would love to see you change my mind.

You're good dude. 600w HPS is close to a 1000w HPS in output. But read below... A 600w HPS bulb puts out about 1000-1100 PPF or umol/s. The reflector will reduce that to more like 850-880PPF in practice. 400w of QBs is about 950PPF and you dont loose 15-20% of that to a reflective hood...

No dude lol. You made the right choice. Going HPS, unless you literally NEED the heat output they provide (which me personally living in a cold climate, find this to be bullshit but who knows), it is objectively the wrong choice when you can go QBs or other good LEDs. A proper 1000w HPS setup...

Dude i feel you. I know how to solder and have soldered lots of shit in the past, but for some fuckin reason soldering the potentiometer to the wires took me a solid hour of redoing it until it was okay. That problem you have with the light going to 100% when you touch the dimmer is from a bad...

I hope so. i would like to see a few tweaks to some of the QB designs. But the QB120 and QB132 are REALLY nice if you cover your canopy with them. My biggest gripe is with the QB288/304. They're too small for how much light they output. You could theoretically cover your entire canopy with...

Coming along beautifully dude. Always crazy to see how well plants bounce back after a hefty haircut, even in flower.

I don't need to in order to understand the difference. I have enough experience using other kinds of lights and have seen first hand how fucking much difference adding more lights is (while maintaining the same power output overall). For instance, just take 1x 23w CFL and 2x 13w CFLs. Place...

This is what scares me. I did watercooled PCs for 3 years. Got leaks more times than i want to admit to. And i would make sure everything was barped/clamped really well and test all the parts before using in a PC for leaks. Whenever water is involved with electronics, I back off. I think people...

Yep. Just want people to realize how substantial the difference is. It makes a big difference in growth from what i have seen. I mean think about this, greenhouses using diffuse light panels are 10-15% dimmer than with clear panels, yet yield 10-15% more crop than the clear panels. And overall...

Still not as bad as COBs I would imagine lol. I know fittings/tubing/etc for watercooling are pretty cheap. The radiator and pump is what costs money.... or if we were talking watercooled PCs, the waterblocks are pricey too.

In veg and seedling stages yes. But in flower you'll want more dude. The HLG 65 is about on par with the viparspectra "300w" you mentioned. The QB132 is on par with 2 of them.

Light uniformity/spread/diffusion should be the highest priority though IMVHO. I think you would be surprised how big of a difference it actually makes. For instance, 16 cobs @ 50w each in a 4x4 tent provides frankly very poor penetration when compared to 9 QB304s @ 75w each in a 4x4 tent. I say...

Check my signature. Those are Samsung LT562B 22" strips (vs LT564B). Single row, the 64B strips are double row. I paid $17 per strip and heatsink. Samsung F/Q/H series LED strips or bridgelux gen 1/2 strips are the best DIY LED option on the market right now. Wont go into the specifics, but...

The quantum board grower actually keeps the lights 8-12" usually. He was just moving stuff around and put a second scrog net so he raised it in the pic. So that's 46w a square foot. That's a fuckload of light. Easily over 1000w PPFD at 12". So to make a good comparison, here's a COB grow at...