Suggestions on % of RO water??

[-gb-]

I'm installing a Revers Osmosis system tomorrow and have a questions. I'm installing the system to clean up my municipal water.

What I find in my tap:

Ammonia between .25 and .50 ppm
Nitrate around 2.0 ppm
Nitrate between 5.0 and 10.0 ppm

I have a good filtration and two potted plants but they can't keep any of the above levels in check. So, I'm installing RO.

My question is... what percentage of RO would should I use? I was thinking 50% RO and 50% filtered (without RO). I'd achieve this by placing a flow restrictor on the waste water outlet. I know this will reduce the life of my membrane but I'm concerned with using too much water. My water bill is already high.

Suggestions on % of RO???

[-gb-]

I also need to purchase a TDS meter. That is a good number to aim for? A TDS reading of 150??

[Trier20]

Depends on what you're wanting to do. A high tds is favored when growing out while a low one is favored when breeding. 150-250 would probably be a good number to shoot for for a display tank of adults. 50-50 would be a good place to start when mixing. Good luck!

[-gb-]

Thanks Trier, I'm growing out fome 5" from Kenny so I'll aim for between 150 & 250. Thanks for the help!

[-gb-]

I installed my RO system last night. My water TDS reading is 5ppm.
My Nitrate/Nitrite are now zero and my ammonia is very close to zero.

Looking forward to seeing how the improved water effects my fish :)