Switching to RO mix

[EdKaz]

 So now that I have things kinda in order, Im wanting to start using and RO mix for at least some of my pairs.
Currently they are swimming in liqui rock......TDS in the 400's , and PH at 8plus.

  So what will stress the fish out the least.......drain each tank 1/2 way and just add RO to top it back off over a couple hours or so.......or fill em back up with a 50 50 mix, and keep adding the 50 50 mix  a gal or two at a time after cleaning up the bottoms over a period of a week or two, until the water finally drops and stays in the 150/180 range?

[Mugwump]

So now that I have things kinda in order, Im wanting to start using and RO mix for at least some of my pairs.
Currently they are swimming in liqui rock......TDS in the 400's , and PH at 8plus.

  So what will stress the fish out the least.......drain each tank 1/2 way and just add RO to top it back off over a couple hours or so.......or fill em back up with a 50 50 mix, and keep adding the 50 50 mix  a gal or two at a time after cleaning up the bottoms over a period of a week or two, until the water finally drops and stays in the 150/180 range?

I'd do the 50/50 mix with the water changes....continuing over a week or two.....I guess you could drip acclimate them over hours too....quicker.....just like getting new angels....

[EdKaz]

I'd do the 50/50 mix with the water changes....continuing over a week or two

My thoughts on that way, were that the water wouldnt be stable over the week or two. Smaller changes on a daily basis, but adding a lil RO mix, and the water changes.......fish have to acclimate daily (albeit slightly).
The daily change/acclimate, might stress em out more than a drip it in and be done in a day?

[Mugwump]

..best to go the safe route, I guess.....no hurry anyway..

[b125killer]

I just got done doing the same thing. The first 25% water change was straight ro water. It did stress the fish but they did ok. After that I mixed the ro water. I got the tds to 150ppm then did 25% water changes. I keep doing the normal water change schedule until the tanks tds was at 150ppm. They seem to do better with doing it a little at a time.