Hi, ive been growing phrags for 18months, i've just ordered myself a Bs Paph St Swithin to try. I like to use RO water and rain mix (msu) feed. My Phrags i measure 120TDS strength, it seems good feeding all the time. How does this kind of paph compare apart from being drier and what kind of water values should i be aiming for? I guess im worried about overdoing it. Any general advice is really welcome too thanks!