300g, not the most recent picture I have a bunch more coral in there now, fairly new tank still, migrated a 3month old 75 into this 300g a week ago or so, but I do a 25% water change weekly. did 25% weekly on the 75g before migration.
My reasoning is pretty simple, Toxins build up after a while no matter what, I like to keep them diluted down as much as possible.
Nutrients are absorbed out of the water column by all my critters and changing out some water replenishes some of the nutrients.
I know it is not a perfect system, but I would much rather do a water change weekly, than invest in pricy, and sometimes un-reliable Dosing systems to add my Calcium, Magnesium etc back into my water, or worse try and measure out dosing myself and manually add it to the system.
You may note Ido not have many SPS, that is by design. I stayed with the softies and LPS becauseI love all the movement from those types of corals.
![20230430_192039[1].jpg 20230430_192039[1].jpg](https://test9.reef2reef.com/data/attachments/3059/3059937-f6044aac487688b1b65d0ad8e2a94498.jpg?hash=9gRKrEh2iL)