This is no problem, I am in the UK and literally bred thousands of Neo’s in very hard water. Once I gave up with trying to match water parameters and just did 30% water changes straight from the tap every week they exploded in numbers.
They are a lot stronger then people think, keep blue dreams in 15L storage containers outside no filter or heater with temperatures as low as 3 degrees Celsius with no problems.
sarazorz27 
My water goes off the GH scale, I didnt want to waste any more drops of my GH test kit lol
The RO unit was the best investment I have ever made.
You in the UK or USA?
This is no problem, I am in the UK and literally bred thousands of Neo’s in very hard water. Once I gave up with trying to match water parameters and just did 30% water changes straight from the tap every week they exploded in numbers.
They are a lot stronger then people think, keep blue dreams in 15L storage containers outside no filter or heater with temperatures as low as 3 degrees Celsius with no problems.
what kind of subtrate are you using?