I run 1.5" pvc feed line from the res to the back of my 20 gal totes where it T’s off to each tote.
I had 3/4" black tubing for returns but I wanted to go all pvc, so I changed to 3/4" pvc returns.
Also insulating all lines will help with keeping temps around 68*, along with a chiller. Some can get away without it and some cannot.
My system holds about 21 gal now that I have reconfigured, down from 22 gal.
I have a 400 gal/hr. water pump from active aqua rated for 20-40 gal of water. Too much flow will cause roots to grow faster and longer and into pipes more because they tend to follow the flow of water.
My system is a little different in the fact it’s an undercurrent system instead of water being fed into the top of a bucket/tote. So the water always flows under the roots. It doesn’t make it better, just another option for rdwc to work. There is probably not much difference when it comes to growing between whichever system you have as long as it works and doesn’t leak.
Experience with whatever system you have will help you grow bigger plants.
I have had roots get into the 3/4" tubing once, maybe twice but nothing to stop it up.
Now, I just check periodically to make sure there is not a stray root trying to slip out through the outlet. When roots get close, (usually only during the stretch), 'll just reach in and fold them back over themselves. Easy peasy!
I also off-set my netpots to the rear of my tote lid to help with that… which it definitely does.
What size tent?
There is always a chance for leaks… It’s like anything else, just needs a little tlc every now and then… (PM) Prevented Maintenance.
I like the bulkheads. There are several options.
Uni-seals are hard to deal with and IMO, not practical for a lot of PM. Some folks can manage them with no issues, others can’t.
You can get by with less expensive bulkheads or you can buy a good solid quality bulkhead designed for heavier use. (You won’t regret it IMO).
If you are gonna go rdwc, then go all in and do it right.
Don’t over size your water pump. Use an appropriate size water pump for the amount of water plan to have.
@Chrisr36 DON’T use silicone!.. sorry brother @Trvff…
Unless you don’t mind water everywhere… It will happen! The weight of the water can weaken the bond between the pvc and the bucket/totes. Not to mention moving it around and cleaning it may break the bond.
Luck may be on your side…lol
Water: More water will provide a better root environment and help stabilize pH and ppm’s.
Air: The more the merrier…
Keep it simple. Less can be more when it comes to hydro… especially when it comes to ppms…
Nutes: Depending on brand of nutes, you might want to make sure you are running a good quality hydroponic nutrient. Try to stick with the basics nutes at first until you get use to how your system is gonna run. That way, you establish a starting/base point. It can be hard to tell what may be happening, if or when, an issues arises if you have a lot of extra stuff in there.
Are you gonna scrog?
How are you gonna scrog?
Not necessary, just something to think about.
Scrogging is why my system is set up like it is.
Many ways to accomplish the same goal.
More questions, ask away!.. Good luck.