RDWCWF SYSTEM

[legitroller]

Hello question for anyone that has knowledge in rdwc or dwc whatever . So for starters I've built a two tote one res waterfall system. Now each tote is a 15gal and the res is 20 gal. I brought a 42gal chiller what size water pump would be suitable for this system. 2300gph or more. Thanks for the feed back. The totes are in a 5x5 tent res outside of the tent as well as the chiller.

 

[Thurston]

What size return lines back to reservoir? I had 3 inch lines and a 800gph pump was sufficient. You want it to be balanced so as to keep water level the same in all containers. Pumping too much volume too quickly can be an issue.

 

[legitroller]

What size return lines back to reservoir? I had 3 inch lines and a 800gph pump was sufficient. You want it to be balanced so as to keep water level the same in all containers. Pumping too much volume too quickly can be an issue.

Good question so I'm running 1/2 pipe for the water fall from the pump and the 2inch black hose to the chiller but no pump yet cause not sure of the gph I should use considering it's a 42gal chiller

 

[Thurston]

I think 2300GPH would be too much unless you have a method of throttling the flow. I would also suggest a cooling coil in the reservoir from the chiller. This prevents contamination of the chiller from nutrient solutions.

 

[Wastei]

You want to undersize, not oversize the pump in a recirculating system. You don't need much to circulate even a very large system and a large pump will only heat up water temps.

Focus on a reliable industrial pump for small applications and a proper pre-filter/strainer. I used a small Swiftech MCP655 for 10+ years and it's still operational.

I had a 450-500gph pump for a 4 site 40 gallon system. I could easily double that with the same recirculating pump. Many pumps are variable with PWM control.

 

[legitroller]

https://www.mediafire.com/file/3dsjpaeb7eilyfp/20240930_054921.mp4/file

 

[legitroller]

https://www.mediafire.com/file/3dsjpaeb7eilyfp/20240930_054921.mp4/file

In the video the pump I'm using is a 430gph

 

[legitroller]

I think 2300GPH would be too much unless you have a method of throttling the flow. I would also suggest a cooling coil in the reservoir from the chiller. This prevents contamination of the chiller from nutrient solutions.

A cooling coil school me some more what am looking for so I can buy it

 

[legitroller]

You want to undersize, not oversize the pump in a recirculating system. You don't need much to circulate even a very large system and a large pump will only heat up water temps.

Focus on a reliable industrial pump for small applications and a proper pre-filter/strainer. I used a small Swiftech MCP655 for 10+ years and it's still operational.

I had a 450-500gph pump for a 4 site 40 gallon system. I could easily double that with the same recirculating pump. Many pumps are variable with PWM control.

Thanks I appreciate the help and knowledge and that's with you using a chiller

 

[Thurston]

Look up stainless steel wort coil. Basically a stainless steel coil that resides in the nutrient reservoir. The chiller circulates cool clean water through the coil which then cools the nutrient solution. Nutrients never enter the chiller.

search terms RDWC, Wort, coil

 

[legitroller]

Look up stainless steel wort coil. Basically a stainless steel coil that resides in the nutrient reservoir. The chiller circulates cool clean water through the coil which then cools the nutrient solution. Nutrients never enter the chiller.

search terms RDWC, Wort, coil
[/QUOTE

Thank you