The TDS of 130-150 is perfecr for caridina shrimp, as is the GH 4-5 so there is no problem there! If you are using the shrimp GH+ with RO water then it is perfectly balanced for shrimps and try not to obsess about hitting an exact figure balance.
I had some waterlouse in one of my tanks so i had to re-do the tank. It was a long time ago but it worked and haven't had any since. I was using leaves from a pond and that must have been how they got into the tank. I didn't use any chemicals just took everything out and checked it, and re-set it up, using the same plants etc but carefully checking there were no hitchhikers. They weren't difficult to catch but without removing everything you won't know if you have got them all? You can just put the shrimp and fish in a bucket temporarily while you do the tank. Even filters etc will need to be checked/cleaned as well of course! Be very thorough and don't rush through it and be careful with any equipment like nets as you don't want to accidently transfer a tiny scud to another tank etc.
As JayC says any chemicals will also likely kill shrimps so you would still need to remove them if you want to use chemicals!
So now my neo tank I infested with scuds......
is there any safe way to eliminate them? Without removing all shrimp?
Also I started a 20 gallon long for cardinias.
tds130 but I can’t get the gh above 4-5 without raising the tds over 150 what am I doing wrong?
i use rodi water tds0 with shrimp king gh+
Using Brightwell substrate