Aquatronica controller (ph / temperature / salinity / redox /) return pump 5000 liters sump from 96 lt. question: the dry rock as I keep them in reverse osmosis water before putting them in the tank? not having large containers, I would like to keep everything in the main tank and do water changes of osmodi not salt until they drop the PO4 think I have to help all with resin? I have to create a strong movement or leave the water stops? if you have any other advice will be welcome, I do not want to start bad and bring problems for long periods. Thanks in advance, it is a pleasure to speak in your community, even if the distances are so many, you are always close and kind.