Designing a DIY RDWC with Built-in Chiller


#41

Bigger reservoir only means that we get to change out the water every 2 weeks compared to every week. That’s the only advantage of a bigger reservoir and it’s for the person growing who benefits from this, not the plants. A reservoir does help help the plant health though by making it easier to check pH, temps, and ppms more easily.


#42

The reservoir DEFINITELY makes it easier on me, and therefore is beneficial to the plants. I use to hate having to check every bucket and change them every week. Now I just take a little out of the reservoir and check ph and ppm daily, no problem. And after a couple of weeks, turn a ball valve and drain everything, then refill and add nutes. All while sitting in a chair in front of my reservoir.


#43

I too am contemplating building an RDWC system for my grow space but am looking at using 6" PVC tubing laid horizontally with ports cut into the top for net pots. I have some other considerations too but I’ll lurk in the background and learn what I can. @TDubWilly and I touched on this a bit and want to pursue it for a winter grow here.


#44

Sounds interesting, but wouldn’t the roots stop it up? I may not be understanding


#45

Why 6"? Seems like overkill for a task that 4" can handle easily.


#46

I have 4" too. Thinking about the net pots and their size.


#47

Oh ok it said 6"PVC tubing and I was like DAAAAMMMMMNNNNNN that’s some big ass plumbing. It’s not a toilet lol.


#48

A pvc setup like that will be better suited to do sea of green were the plants and the roots stay a little smaller. He wouldn’t be growing massive plants with massive roots.


#49

I personally don’t feel as though 6" is overkill, it will provide a little more root room like granddaddy was talking about


#50

Well we know it can’t hurt having bigger pipes. So I’m sure either way would work fine. But 6" would be harder to clog but I feel that not haveling negative pressure coming from the grow buckets it the real important factor


#51

That would be a film hydroponics not RDWC


#52

What is film hydro? Never heard if it


#53

Nutrient film technique (NFT) is a hydroponic technique where in a very shallow stream of water containing all the dissolved nutrients required for plant growth is re-circulated past the bare roots of plants in a watertight gully, also known as channels.


#54

Is that the system where I see plants coming out of the actual PVC piping?


#55

Sea of Green probably won’t work for me. 6 plant limit in California. More like a 3 plant grow. Would you recommend doing this with totes and a reservoir instead?


#56

You need to talk to @peachfuzz


#57

No , it works for short period strains… but not so good if your trying to vegg and flower… roots will clog everything and plants down the line will suffer… :grin:

Much easier to maintain 1 big water holding res with plants in it and a 2nd res for your controller bucket… keep things simple… :wink:
Every bucket needs to be fed at the same time and emptied at the same time… think of flow rates… :grin:

:v::sunglasses:


#58

A larger reservoir is more of a buffer to regulate ph in an Rdwc as well right? I was under the impression the bigger the better on a res. Kinda the same rule on the plant pots, not judt to alloe for a larger rootball but to prevent the rootballs from filling most of the available area in bucket - which displaces most of the solution out of the bucket - also sometimes ive read it causes roots to be sucked up into the piping if theyre too small.


#59

Are we talking reservoir or plant buckets I’m confused lol.