QB324 grow

Heat. All those HPS lamps throw out a fair bit. It's one of the reasons I don't like horizontal HID grows, as the heat gets trapped under the hoods and reflected down. You can run your plants much closer and with little duress using vertical bulbs and active cooling.

Pulling up my chair

How's the plumming work? One pump underneath the table distributes all the nutes ? Open lines at the ends?

Are you using original hlg heatsinks?

Four 200 litre drums each have a 750lph pond pump connected to a 13mm remote hose which splits into two 13mm feeder hoses for a total of eight stations. Each feeder hose connects to a 13mm ring around the edge of each pot (some stations have two pots, others have one pot) with 4mm barbs (drips) pointed at the base of each plant. The pots drain to 19mm waste hoses that run out of the room to a scheme drain.

The QB324s are mounted to HLG Slate 2 heat sinks - I bought a couple of combos for this project.

What is your spacing between your qb323 boards?

Prawn Connery said:

The QB324s are mounted to HLG Slate 2 heat sinks - I bought a couple of combos for this project.

Click to expand...

What is the temp of your qb324 boards when run at 200W each?

I'm not sure, mate - I haven't measured it. They're quite hot to touch, but not burning (if you know what I mean).

calitrees916 said:

What is your spacing between your qb323 boards?

Click to expand...

The boards are mounted to the heat sinks and have a 2cm (about an inch) gap between then.

Time for an update. Here they are at 6 weeks of flowering. They appear to easily be doing as well as the 600w HPS, but only time will tell. Two weeks to harvest and then we get the numbers. It's been a bit cold overnight, so we're not expecting peak yields, but they're not doing too bad.

Running these boards at 200w each (x2) seems to be about right in terms of overall light, as the growth is what we'd expect from a 600w HPS, and there is only a touch of bleaching on one or two of the taller buds. The plants themselves could be better distributed for a better scrog effect, but the ultimate aim is to go to a one plant, one station/light set-up to reduce plant numbers and still get decent yields.

Prawn Connery said:

I'm not sure, mate - I haven't measured it. They're quite hot to touch, but not burning (if you know what I mean).
.

Click to expand...

i get wat u mean & thx Prawn.

Are the boards 18 inches above the canopy & the 600W hps 2 ft above canopy?

Yeah, that would be close. Probably a little under 18" for the LED and a little over 24" for the HPS if you measured from the bulb itself. We raised the LED a little to get better light coverage, as there are no heat issues and almost imperceptible bleaching of a couple of higher buds. The LED panels will probably hang a little lower once we start growing one plant per light. But like anything, it usually takes a few grows to dial everything in right.

I also need to mention there were a few white flies in the room and I think my mate sprayed them with something - against my advice - and so the pistils browned earlier than they should, which is why they look almost done at 6 weeks instead of 8.

I grow as organically as I can, so if I ever need to spray for mites, I use this: https://ecoorganicgarden.com.au/products/pest-disease/eco-oil/

There's no withholding period on Eco Oil, though I prefer not to use it close to harvest as it can affect bud development.

hi @Prawn Connery
$400AUD is cheap to make those lights & how much was shipping?

Quickbloomlights are selling boards in australia so shipping cost would be cheaper
https://www.quickbloomlights.com.au/collections/horticulture-lighting-group-led-grow-lights/products/horticulture-lighting-group-qb288-v2-quantum-board-1-board-pr-order

https://horticulturelightinggroup.com/collections/quantum-boards/products/qb324-with-slate-2-single-combo

$70 shipping for two of the above combos. Meanwell 480 drivers on special (and with a 12% discount voucher) from Arrow were about A$150 with free shipping.

Beauty light choice and grow eh

Well done

Good to see these in action. Just ordered some myself!

Nice grow I’m running 2 of the 260 w diy kits one has 288 boards and one has 304 boards...
https://www.rollitup.org/t/bongs-420-rotation-room.972656/ going to be harvesting some pineapple chunk in a week

Are you in aus bro, if so nice work

Yes mate, I'm on Oz.

Nice i just cut this Bruce banner down yesterday... u finding the quantum boards finish your buds quicker? This started to hermie but checking the trichomes was very cloudy with some amber should be some wicked smoke

I find that temperature has the biggest effect on flowering times, so LEDs may have an effect as they run cooler than HIDs. In summer, plants tend to flower longer, and in winter, they tend to flower for shorter periods. That's what I'm noticing now that the weather is cooler.