ok now you totally lost me...ergo?

therefore.......

The point of a water change is not to add fresh water its to add a new balanced source of sea water. Thats why people buy buckets of salt.

truckloads.... Aquacraft is retiring @ 55 because of me :mrgreen:

wow 4pg's..thats a new record for me..usually people give up at 2-3 :lol:, but seriously could this be the reason that i still have cyano bacteria, because i use fresh RO water?

well..... you really stepped into it this time
so to speak.......

let's clear something up here. By water change, do you mean you are siphoning out 5 gallons and replacing with a new 5 gallons? Or did you let 20% evaporate and now you topped it up? There is a big difference.

nono i siphoned out 5 gallons and put a clean 5 gallons in...just fresh water though

Right, there's the problem. As you are most probably aware by now, you need to replace the siphoned 5 gallons with saltwater at the same SG.

ok, I think this thread is done now...:mrgreen:

Ok, that is wrong. You need to add 5 gallons back of salt water of the same SG as you removed.
Now that we've cleared that up, you need to determine what the SG is now, using reliable equipment, and adjust if neccesary.