What is the best way to know when the water needs to be changed , other than waiting to have nasty water , or when too many chemicals need to be added to do the job ? Are the TDS test strips worth while and are they an accurate indicator for water change ?
I am currently using the 3 to 4 month water change. I would like a better way if there is one, this is why i was thinking of using the TDS test strips. I have been reading mixed reviews on these, some say they are accurate and some say not to bother with them ??
I know there is a formula, but it doesn't really seem to go with my usage which is always changing with kids, friends and family, its never the same from week to week.
Recommended water change about 1500 PPM TDS reading, is this correct ?
I know there are professional digital TDS readers, but they are way too expensive..
Any thoughts ?