As you will know from following my blog, i have had major issues with Algae. The RO water with a TDS reading of 9 that was being used woud'nt have helped. So how do you overcome this?
Get yourself anin line TDS meter to establish your TDS reading. This meter measures the water before the Reverse Osmosis and pre filter stages. It is not unusual for tap water to have a reading of 300. These meters also indicate the reading after the reverse osmosis process. As expected this should be zero.
If like me you have a TDS reading above 0. You will be feeding the nuisance algae. Provided your TDS is quite low, for example around 10 you can be satisfied that your Membrane is in satisfactory working order.
If higher or your RO membrane is a few years old you might want to consider membrane replacement.
So your pre filters a…