If you live in the UK, there's probably a law against selling scrap metal, which was what it was when in the skip..,.. I thought some of our laws were too restrictive, But the UK has laws, up the ass, on just about everything.
If you have a hot reservoir, insulation will keep the heat in.. If you have a cold reservoir insulation will keep the heat out.. Insulation doesn't cool the reservoir..
I'm almost ashamed to admit my biggest lines are 1/2 ".. With my grow the water comes in the top and goes out the bottom.. Wish i could think up a fancy name for it.. I'll just have to settle for rdwc, albeit at only 5-6 gallons an hour.
Undercurrent: Just another way of saying " a river runs...
SM, here's a link to a post using 2-5 gal buckets.. One grow bucket, 1 for the reservoir.. Except in this case the drip ring is under lid.. The pvc is higher than the water level in the reservoir and the grow bucket.. that's what makes it work.. last post...
I modified two of my WFs to use the drip ring in each WF to circulate water from the remote reservoir.. I used a 315cmh over each WF.. Don't want to post the mod in your thread without asking..
There's a really good first time grower thread on 420 using an ice probe.. Google - dwc scrog ice probe chiller..
For $200 you can get a ice probe, controller/power supply and an aquarium temp probe from amazon...
I once ran low on hydroton in a unconnected 4 wf grow.. I used a 50/50 mix of washed pea gravel as filler in one bucket.. I didn't take in to consideration the fact that the pea gravel was mostly 50% limestone. The ph in that bucket always needed to be adjusted down..
This thread is almost as good as this one..
https://www.rollitup.org/t/if-you-do-not-believe-in-climate-change-you-should-not-be-allowed-to-hold-public-office.922825/
How do you have the waterfarms set up? Are they all connected? Do you have the controler reservoir and the feedback reservoir that goes with it? Are there any of the blue tubes with the white tape that indicates the water level anywhere on the containers, or reservoir? Does it have the so called...
Here's the best scrog tutorial on riu.. First 12 pages layes it out better than most other scrog tutorials i've seen....
https://www.rollitup.org/t/pineapple-express-g13-labs-seed-to-harvest.344359/