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I'

Worked great. Got rid of a bunch of deficiencies I was chasing for some time.

Tapo cam's. Pretty cheap lots of features.

Ended up going with normal camera. But they don't constantly have their night vision I think only while I try to view on dark cycle. So I never had an issues with it. I also think the LEDs used for night vision are so bad for PPFD that the plant won't really pick anything up. So I think it...

I don't think a centrifuge can clean the water to the degree you are looking for though I find the idea really cool. We use centrifuges at work to clean water for tunnel operations. But we have to add chemicals to the water which helps solids floculate and then be seperated by spinning...

$130 Canadian Dollars for 150W light with good spread delivered the next day. Less than a dollar a watt. 2.7umol/j has different spectrum diodes. It's decent value. .is there another light you had in mind which is better value?

The XS1500 is getting really good reviews especially by Migro for the evenness of the light spread. If I was looking for a good budget light I'd try those.

5500 lumens from 1 strip is a bit of a bold claim but I can't tell what wattage those are. But let's say the 5500lumens is true. Then you would need 16-20 of these lights per 4x4 grow space.

If you let the top drip drop on the stem it will get to the roots everytime.

I can help you with your floor plan if you like. I have a bit of experience designing grow rooms. I suggest building the rooms large to the final size but only lighting a small section and adding lights and air conditioners as you get dialed in. I read earlier in the thread you aren't worried...

The 500PPM in your tap water will likely be full of calcium either way. 38ppm starting water is great. Will be 100% fine growing with it. Just to give you a reference value Ive been growing for years at 350PPM starting water PPMs with ALOT of that being calcium.

I personally have a lot of experience with these strips. You don't need a heat sink at 0.7a with them. The baking trays will be a perfectly sufficient heat sink/ physical support structure.

Some drivers might make 56V exactly, others might make 57, 57.5, 56.5 58, 60 even. But every driver will vary. Meanwell is sort of known for always having a little extra.

yes the advantage of parallel is it's easier to add more boards later on. But typically the lower the voltage the lower the efficiency, everything is a compromise. But parallel wiring for QBs is really nice and easy.

I think the data sheet lists these drivers at 91-93% efficiency.

For wiring in parallel I would use the XLG240 H because it puts out 56V but that might be tight for a QB648 Also keep in mind the QB 648 can be ruined if you power them backwards (negative on strip to positive on driver and viceversa) for wiring in searies the XLG240 M will be perfect...

You want 16 lights ~ 800W each. And will probably expend another 1000-2000W on fans for air circulation and other grow room power devices like dehu, That gives you around 14-15000W you need to dissipate heat from. Hopefully your noon has a minimum of 50,000BTU cooling capacity. A little more...

1000000% agree. 3.2 umol/j my ass.

I know I know. I was only kidding around, sort of. Is there any reference chart for amperage vs efficiency? Let me price out how much to do a 4x4 with decent efficacy and maybe I'll treat myself to Christmas gift as well.

I I am totally jealous. And slightly offended its not me testing them. :blsmoke::blsmoke: Looking forward to seeing your build though.