RODI flush before and after?

[Notsolostfish]

I just received my bulk reef supply 6 stage rodi system, and i just got it installed with a booster pump. Now before i begin filling. Do i open the flush system at the back 5 min and then close it? and same thing when im done or how should i do it?

 

[ScubaFish802]

I also have a BRS unit and I flush it for a few min at the start and end of each use. The package should come with a big instruction manual and additional parts/adapters. The manual has some great info for getting the most out of the filter life

 

[Waters]

To be honest, I only flush after I change the filters and resin. I make water weekly and do AWCs so it is always in use.

 

[codenfx]

I always flush before and after for about 5 mins, longer on before if TDS meter reads high.

 

[Geebs19]

I do it if I remember, but someone on here said there was really no benefit in doing so.

 

[Pntbll687]

flushing before hand is good practice, especially if you have high tds water.

In a perfect world you would have a tds meter before the membrane, and flush the membrane and wait until the tds meter stops dropping in number. There's a number of auto flush options out there, personally I have the booster buddy from aquatic life and it has an auto flush feature that runs for about 30 seconds before each use.

Not so sure flushing after use is going to do anything for you. The TDS creep comes from dissolved solids that permeate back through the membrane to outside once the pressure on the unit is turned off. This is going to happen no matter what after the unit is used. Flushing it won't effect this at all since it will take time for the solids to work their way back out of the membrane.

 

[Dburr1014]

My Apex flushes 1 minute before and 1 minute every hour.

 

[homer1475]

flushing before hand is good practice, especially if you have high tds water.

In a perfect world you would have a tds meter before the membrane, and flush the membrane and wait until the tds meter stops dropping in number. There's a number of auto flush options out there, personally I have the booster buddy from aquatic life and it has an auto flush feature that runs for about 30 seconds before each use.

Not so sure flushing after use is going to do anything for you. The TDS creep comes from dissolved solids that permeate back through the membrane to outside once the pressure on the unit is turned off. This is going to happen no matter what after the unit is used. Flushing it won't effect this at all since it will take time for the solids to work their way back out of the membrane.

My thinking also.

I always flush before hand(start at about 35TDS), which will drop down to 5.

Not flushing before use forces all that high TDS water through the DI. Which burns it out prematurely.

Ideally you want a flush valve, and DI bypass valve. Even with the flush valve open(flushing) you will still push some high TDS water into the DI. With the bypass you can flush the RO membrane, and avoid sending high TDS water in the DI.

 

[exnisstech]

I have never flushed. To be honest I make so much water since my RO system is also plumbed into the fridge and a seperate fuacet (before the DI if course) that I have never even thought about it. I run a few gallons through after changing filters but that the only flush I have ever performed.

 

[Tuan’s Reef]

Both for me. Before and after. This keep my tds creep low