Featured Melting mushrooms

They should be calibrated from factory, but as with all things they can go a little out at times. You can get a solution for (at a guess £5-£10) but would just try it first.
Try if on your tap water too so you can work out your rejection ratio through your RO if you wish.
Also, if you test on water in a not so clean cup / container it'll give you a high reading. So fill container / cup, drain, fill, drain and go on for a few times then fill and test.

 

Ill try that thanks


Regards
Sean

 

Okay, TDS on tap is 36ppm and TDS on RO is 0, should I do it in tank water??


Regards
Sean

 

Tank water will not give a TDS, second salt is added it's gone. That's very low from tap.

 

I stuck it in the tank to see and it read 870 x10


Regards
Sean

 

No point clubber122 - the salt will send the reading through the roof.

36 TDS straight out the tap is very low (you may just be fortunate to have a water that is very favourable but for most, a reading of over 200 is not unusual. Mine is 224ppm). Couple this with the history of your RO unit, membrane and filters I would not have expected a 0 TDS on the RO output (permeate).

This would lead me to question whether the TDS meter is reliable.

I would get your LFS or a friend to re-test your RO water (permeate) to see if the TDS meter you're using is reliable.

Alternatively, take the TDS meter to your LFS and ask them to test it against their RO water.

 

My tap water is approx 72 so other than being double it's not too different. Water is pretty clean up here.
As for the tank reading, basically it's never going to be good. Mine reads Err or something like that because it's over 1000, or maybe 8700 in your case.

 

It may not be inaccurate.
If you consider a RO unit, if it's had fairly clean water going into it, then it'll have less to remove (as will the pre-filters) therefore it will last a lot longer.
Clubber122. I'll see if I get a chance to test my Ammonia here from tap just to compare. I still think it should be zero.

 

Thanks that would be useful, I need to get my tank water re tested and verify my results


Regards
Sean

 

Maybe we have the culprit for melting mushrooms, star fish ate my clam! Coral eaters too apparently?


Regards
Sean