| Many new Reef Keepers get confused and stuck | | | | top up daily if possible. |
| when it comes to topping up water in their Reef | | | | When carrying out a water change, because you are |
| Aquarium. It is really simple and easy to understand. | | | | removing the mixed salt water your are removing |
| It doesn't need to get confusing. | | | | both elements, salt and RO water. All that is required |
| Evaporation happens continuously, many new | | | | now is a fresh saltwater mix that has the correct |
| hobbyists start by adding Freshly mixed saltwater | | | | salinity of about 1.025. |
| then end up with a really high salinity. You have to | | | | Hopefully this as helped you grasp this simple regime. |
| think of your water as two elements, in fact it is. Salt | | | | This can now be taken a little further. Maybe your |
| and Reverse osmosis water. Salt cannot evaporate | | | | salinity is high or low, this again can be adjusted in |
| because it is a solid and solids don't evaporate. | | | | just a simple method. |
| Therefore as the water evaporates, the salt remains | | | | If it is high, just remove a few liters of saltwater and |
| in the Aquarium, which in turn increases your salinity. | | | | add some fresh RO water. |
| From this you should have worked out that Top up | | | | If it is low, just add the correct salinity water to the |
| RO water should be added. | | | | aquarium instead of RO water, Only a few liters at a |
| If your Aquarium is left for a few days or more the | | | | time though then check Salinity until desired is |
| salinity will rise rapidly, which is why it is important to | | | | reached. |