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60w per sqft gives me 1500ppfd across the canopy with a par meter

Oh they don’t have an issue dissipating 60w of heat it’s no problem. The issue is putting 60w of heat into the air on my room with low ceiling so low air volume. Even with ac units powerful enough the heat directly in front of the cobs is always a lot hotter than rest of the room. Plus liquid...

My mistake 250mm 25cm

It’s citizen 12/12 mix of 4000 and 3000 90 cri chips half and half on each sink. They put out a shit Load of heat as they are mounted vertically. I am thinking of running strip lights mounted on copper pipe so I can actively cool with water.

60w per square foot. I’m switching up to water cooling soon. I went for 25mm wide circular heat sinks from China 13mm long fins and 10mm solid surface before the fins. 4 cobs per heat sink and 15w each. But like I say I plan on scrapping vertical growing and using a larger flat plane of grow...

Joists are cross braced and 12 inch on center with steam beam through the middle and 22mm chipboard floor panels tongue and groove

Yeah I currently have a massive led setup with heat sinks wieghing 600 kilos of aluminium and two 1000l (1000kg) tanks for my nft setup so joists aren’t an issue

My current setup has two 1000l ibc. Got a steel beam with 2x 6 joists

When you say flora flex do you mean these?

With rockwool how do you ensure you don’t overwater?

It’s a separate drain I’ve made Through the floor into room downstairs and then through wall and it goes into the drain in the ground outside

It’s done properly with an air gap. The attic is now inside the insulated envelope of the home

Closed cell foam

6inch spray foam around the entire room completely sealed by me so I know it’s done right Co2 generator installed and ac installed

Custom led build will go with it . What is the best form of dtw?

Very low attic so I’m growing low height single sticks

How would it drain back to a resevoir with low ceiling height? I’d need my flood trays on the floor

Probably comparably similar price tbh. But coco may not be my best option. Rockwool blocks may also be viable just looking for people’s experience to guide my decision

Honestly not sure I don’t grow in coco atm. I’m considering the switch. I think it would be a PITA to remove roots from 100kg or more of coco..

I’m considering a switch up to a high density sog setup. I have a low ceiling issue so ideally I need moveable tables that I can move about if I need to gain access to the grow and for planting up. I considered flood and drain but the height restriction would be an issue for the gravity drain...