Magnesium at 1250. Dose or not??

[asylumdown]

I've yet to dose mag and my tank's been running almost a year. My rule for dosing is to always test right before a water change, and if the level is low two water changes in a row, to bump up the dose (or start to dose).

You should watch for trends, not snapshots in time.

[04V10]

I've had to just start dosing recently, however it's a 20gal heavily stocked with a mixed reef and it's been running for just over a year. However, my Mg stayed stable until October of last year when things started to really grow. I don't dose much, but I lose 20ppm over 2 weeks currently if I don't dose anything and just do my weekly 25% water change.

I do keep my Mg up at 1320 though. I found when my Mg dropped to 1280 and I left it, the corals began to slow down in growth. As soon as I bumped it up into the 1300's again, things started moving. Just some food for thought.

[LeanneP]

Originally Posted by 04V10

I've had to just start dosing recently, however it's a 20gal heavily stocked with a mixed reef and it's been running for just over a year. However, my Mg stayed stable until October of last year when things started to really grow. I don't dose much, but I lose 20ppm over 2 weeks currently if I don't dose anything and just do my weekly 25% water change.

I do keep my Mg up at 1320 though. I found when my Mg dropped to 1280 and I left it, the corals began to slow down in growth. As soon as I bumped it up into the 1300's again, things started moving. Just some food for thought.

Thanks for the info. I will try and bump it up to over 1300 and see if it makes a difference. I have had some growth but I still have screen on top for my nem so my lights aren't on fully but maybe it is also the Mg.