# Building RDWC system, any help appriciated **URL:** \ **Category:** Hydroponics\ **Tags:** indoor-grow\ **Created:** [February 15, 2025, 8:29pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731 "2025-02-15T20:29:09Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![Leo\_valdez](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@Leo\_valdez](https://ilgmforum.com/u/Leo_valdez)\ **Post date:** [February 15, 2025, 8:29pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/1 "2025-02-15T20:29:09Z")
Hey everyone I know this topic is similar to others but im trying to design a 9 plant RDWC system and had a few questions. Will this design work? The red lines are return and green are fill. Other info: 2 in pvc pipe 5 gallon buckets each one will have air stone 5x5 grow tent area 27 reservoir outside tent My main questions are: How big of a pump should I get? Do I need a separate pump for the return line or does it circulate back naturally? I have 2in pipe for the fill line currently but do I need that or just 2in for the return? ![RDWC 2 Back](https://global.discourse-cdn.com/growingmarijuana/original/4X/b/8/6/b86f017e8caf58ee92909491dd92b7b4d1ffab69.png) ![RDWC 2 Front](https://global.discourse-cdn.com/growingmarijuana/original/4X/d/d/f/ddfcf00fab6c60703f5eb3af36eee0d84d0942e9.png) Ive been looking at info on the internet so any help would be amazing ---
**Author:** ![Mmanson1981](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mmanson1981/32/1043357_2.png) [@Mmanson1981](https://ilgmforum.com/u/Mmanson1981)\ **Post date:** [February 15, 2025, 10:31pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/2 "2025-02-15T22:31:36Z")
Looks solid to me. From my knowledge 1 pump will be good. As strong as you can get. ---
**Author:** ![Leo\_valdez](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@Leo\_valdez](https://ilgmforum.com/u/Leo_valdez)\ **Post date:** [February 15, 2025, 10:48pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/3 "2025-02-15T22:48:56Z")
Great, thank you. Am I correct to assume that if I get a pump rated for 2700 gph, each pot will receive about 900 gph? Is this overkill or right, Ive seen a lot of different suggestions about this? ---
**Author:** ![Myfriendis410](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/myfriendis410/32/556067_2.png) [@Myfriendis410](https://ilgmforum.com/u/Myfriendis410)\ **Post date:** [February 15, 2025, 10:53pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/4 "2025-02-15T22:53:05Z")
9 plants won’t fit in a 5 X 5. Maybe 4. Go with totes instead of buckets. Use a large rez outside the tent (the R in RDWC). Check rez in the tent. Get a chiller. 400 gph or larger pump, prefer submersible. Look into using Jack’s nutes. 4" net pot is plenty. ---
**Author:** ![Leo\_valdez](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@Leo\_valdez](https://ilgmforum.com/u/Leo_valdez)\ **Post date:** [February 15, 2025, 11:02pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/5 "2025-02-15T23:02:05Z")
This is very helpful, thank you. Currently Im growing in soil have have 9 plants. Ik im not doing it perfectly, but it seems like they fit decently and don’t compete too much for light. Does hydroponics make bigger plants, even If i continue to do about 4 weeks in veg then flip to flower? ---
**Author:** ![Mntmannw](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mntmannw/32/893234_2.png) [@Mntmannw](https://ilgmforum.com/u/Mntmannw)\ **Post date:** [February 15, 2025, 11:25pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/6 "2025-02-15T23:25:19Z")
I’ve only grown in hydro, I use the air cube ebb and flow. Maybe @Dman1969 can advise on this as I think he used to be soil and switched to hydro ---
**Author:** ![Dman1969](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/dman1969/32/1115434_2.png) [@Dman1969](https://ilgmforum.com/u/Dman1969)\ **Post date:** [February 15, 2025, 11:36pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/7 "2025-02-15T23:36:59Z")
> [@Leo\_valdez](#): > > Does hydroponics make bigger plants Most Definitely in most cases. And I’m with @Myfriendis410 you will fill a 5x5 with 4 plants. ✌🤟 Unless you do a SOG ---
**Author:** ![Mntmannw](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mntmannw/32/893234_2.png) [@Mntmannw](https://ilgmforum.com/u/Mntmannw)\ **Post date:** [February 15, 2025, 11:40pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/8 "2025-02-15T23:40:32Z")
I’m struggling trying to get 9 plants in my 8’x8’ bloom room and still have room to care for them properly ---
**Author:** ![Myfriendis410](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/myfriendis410/32/556067_2.png) [@Myfriendis410](https://ilgmforum.com/u/Myfriendis410)\ **Post date:** [February 16, 2025, 12:20am UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/9 "2025-02-16T00:20:10Z")
Kind of the whole point lol. Done right it beats all other methods. FYI photoperiod plants won’t respond to a light change until sexually mature. Figure 150 to 200 watts of quality LED’s per plant. ---
**Author:** ![GrizzlyGrows](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/grizzlygrows/32/1097976_2.png) [@GrizzlyGrows](https://ilgmforum.com/u/GrizzlyGrows)\ **Post date:** [February 16, 2025, 1:32am UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/10 "2025-02-16T01:32:21Z")
Im doing 12 in an 8x8 and thr forest is real lol any maintenance is a pain in flower ---
**Author:** ![DanB](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/danb/32/1128709_2.png) [@DanB](https://ilgmforum.com/u/DanB)\ **Post date:** [February 16, 2025, 7:36am UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/11 "2025-02-16T07:36:45Z")
Hey got another one for y’all @Retiredoldguy @SolomanGrundy been great help to me thought might be help to them if not too much on y’all’s plate already ---
**Author:** ![Mmanson1981](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mmanson1981/32/1043357_2.png) [@Mmanson1981](https://ilgmforum.com/u/Mmanson1981)\ **Post date:** [February 16, 2025, 3:33pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/12 "2025-02-16T15:33:28Z")
Hey you forgot me lol ---
**Author:** ![jrok96](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/jrok96/32/1010286_2.png) [@jrok96](https://ilgmforum.com/u/jrok96)\ **Post date:** [February 16, 2025, 5:08pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/13 "2025-02-16T17:08:19Z")
@Mmanson1981 maybe he didn’t like your advise and doesn’t want to be rude and tell you?? ---
**Author:** ![DanB](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/danb/32/1128709_2.png) [@DanB](https://ilgmforum.com/u/DanB)\ **Post date:** [February 16, 2025, 6:08pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/14 "2025-02-16T18:08:45Z")
That’s definitely not the case, was stoned an slipped my mind bro sry @Mmanson1981 ---
**Author:** ![Mmanson1981](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mmanson1981/32/1043357_2.png) [@Mmanson1981](https://ilgmforum.com/u/Mmanson1981)\ **Post date:** [February 16, 2025, 6:29pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/15 "2025-02-16T18:29:57Z")
Lol its all good ---
**Author:** ![DanB](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/danb/32/1128709_2.png) [@DanB](https://ilgmforum.com/u/DanB)\ **Post date:** [February 16, 2025, 6:40pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/16 "2025-02-16T18:40:50Z")
Bro did we both venture into Hydro at the same time? Feels like it. But honestly I love it. So much easier on maintenance so far ---
**Author:** ![Mmanson1981](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/mmanson1981/32/1043357_2.png) [@Mmanson1981](https://ilgmforum.com/u/Mmanson1981)\ **Post date:** [February 16, 2025, 7:22pm UTC](https://ilgmforum.com/t/building-rdwc-system-any-help-appriciated/117731/17 "2025-02-16T19:22:31Z")
Yea just about