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Check this out :D 2100W of water cooled COB LEDs in a 8x4: 2x450W bars with 8 COBs each. Dirty voltage control via buck boosters and resistor current limiting. 2x600W bars with 20 COBs each. Meanwell HLG-600h driven. 2.1kW per tent. 4.2kW total. All water cooled. I think this is the first...

Lol! OK here's an update. The slime is back despite the bennies. I think these plants are buggered. I'm stuck in a cycle of recovery, slime, recovery, slime. Using sterile measures (UV, Ozone, chlorine) and low ppm nutes I can get new white root growth but if I turn that lot off then slime...

Ooooh! Now that is a good idea! I could easily do one 8x4 tent RDWC and one 8x4 tent hempy side by side.

I was a little anxious leaving things alone over the weekend because it was going to be 7 days since the last res change and that is around the time where slime had taken over previously... but to my surprise roots are looking fine! I did a res change on Monday morning and noticed there is a...

Not convinced I have it all figured out! Anyway I've assembled the autopot system for the mums and put up some plastic sheeting with a zipper for the door. Have also mixed up the medium. I've gone with 2 inches of clay pebbles at the bottom and then a 60/40 coco/perlite mix. I think I'll get...

Yeah I've been using generic "Pool Shock". The problem I have now is that slime seems to grow so quickly! This last time round I found snot on 1 plant and within a day everything was infected... and then fighting it is a real effort. I decided to go RDWC to save time and maintenance. If I need...

You need to provide more info to get a meaningful reply. All anyone can tell you at the moment is that if you properly carbon filter all your extracted air then it won't smell. The best way to do that is anyone's guess because you haven't provided any useful info. What is your current grow and...

Yeah I have a 5 inch fan (approx 60cfm) intracting air to the loft. The end of the duct is covered with a pre-filter but this is not a HEPA filter. So it's possible air is contaminated. I doubt my immediate neighbours brew and that side of the house is quite a way from the next building. I...

Yeah, it's not such a problem in the US: https://en.wikipedia.org/wiki/Kyllo_v._United_States They can't use FLIR against you in the US without a warrant as it's considered a search... and you can't be searched without a reason. In the UK they can fly over a city, pick out any houses which...

Been busy with other stuff, sorry for lack of updates. I've overcome the root rot but it took a few days. Went something like this: Day 1: 2ppm hypochlorite + plain RO water, no nutes Day 2: Added 1ppm hypochlorite + 1/4 nutes in RO water Day 3: Added 1ppm hypochlorite + topped up to 1/2 nutes...

Well at the moment there's no more slime in the system. Roots are looking slightly brown tinged but not too bad and there's white growth from the tips. So I think the slime is on the back foot for now. I've gone to 1/2 strength nutes and added 1ppm chlorine again. I've been reading about...

Good thought but the white tubing is actually double layer black/white iceline. http://agradehydroponics.com/products/ice-line-30m Definitely not that causing light leaks :( wish it were... Easy fix! Chiller has clear tubing yes. It has a separate closed loop. So there's a stainless steel...

Any definitive answer with the RC+ / RC - lines? I'm assuming a make/break switch is used to turn it on/off? And 5v can be used to provide power if you need it but is not necessary? Thanks for any insight :)

I think more likely the slime was just on the roots. All it would take is 1 little spore and I'd get reinfected. I think I'm unlikely to get rid of it completely from this grow now... but I'll try anyway :D I'd not paid them much attention before. Look interesting. I was planning on using...

Arrrgghhh, slime is back. Went to look at the grow room this morning and the Purple Afghan Kush plants were all droopy. Inspected the roots and found blobs of snot in places. Benny tea every 3 days alone hasn't managed to keep the slime away :( Have given the whole system a scrub in dilute...

I've read 60-72F is optimal. Lower temps increase oxygen availability. Below 60F and mineral availability starts to drop off. In nature ground temps are usually around 15F lower than air temps. So that is what cannabis has developed to expect. Warm roots are definitely not desirable. You're...

Search for Azospirillum on alibaba. Bulk powders available from China and India. Not sure you'll have much luck sourcing this domestically but I'd guess commercial crop farmers would be the only people who'd need this in bulk. You could try calling a fertiliser wholesaler and asking?

Cool roots are better than warm roots. 58-68F is not bad. Far better than 78F.

Er... yeah... um... initial budget was £4k ($5.8k in USD). I actually planned to be 25-50% operational for my first grow and then to finish things off for my second grow... but I've worked out that it's easier to just get things done properly first time round. So... we're at around £7k ($10.1k...

Concrete blocks yeah :lol: Not that bad to get up the ladder though. Most difficult things to get into the loft were... water chillers, AC and tents. Anything bulky over 20kg is not easy to carry up a loft ladder alone :o