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High Magnesium

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Hi all, still learning the ropes with the inherited tank  ;) last time I measured my magnesium levels were 1480, I measured today and they are now 1540 I'm going to recheck them tomorrow morning but if they are that high what can I do to reduce it please?

My phosphates are slowly coming down now,  I added 50ml bio pellets last week and 50ml this past friday and the reading is creeping down from 0.25 to 0.1 so that's looking positive

romperstomper

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Reply #1

It will come down on its own ,only way it can rise is if you are adding it via dosing all your salt levels .If it is creeping up to much you need to change your salt to one that contains a lower amount .
Last Edit: Jul 31, 2018 12:54:55 pm by romperstomper

Georgeypudding

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Reply #2

I've not actually added any salt to the tank in the whole time we've been here (about 3 weeks)

romperstomper

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Reply #3

Has to be tester error then ,I would not worry about it ,it  should drop on its own . Unless your salinity has increased ?
Last Edit: Jul 31, 2018 1:11:10 pm by romperstomper

Paddone

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Reply #4

I've not actually added any salt to the tank in the whole time we've been here (about 3 weeks)

It would not be salt in a water change it would be a clear liquid being added by your dosing pump if you have one?

Georgeypudding

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Reply #5

I haven't been able to test the salinity, I'm hoping to get a tester thing today if my LFS has one.

I have a system that filters the mains water which then tops up the sump/tank is that what you mean Paddone?

Paddone

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Reply #6

No not your RO unit, a dose pump adds concentrated liquids supplements to replace minerals and elements used up by coral and inverts as they grow. one of these can be magnesium. It would look something like this:

Paddone

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Reply #7

Magnesium is only likely to get into your system 2 ways, in a water change as a component in the new salt water or as a liquid/powder supplement added by a pump (like above) or by hand dosing the liquid.

Georgeypudding

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Reply #8

Ahh, as far as I am aware I have no dosing pump, there was certainly no mention of one in the instructions left by the previous owner and I've not seen anything that looks like that image

ajm83

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Reply #9

Ahh, as far as I am aware I have no dosing pump, there was certainly no mention of one in the instructions left by the previous owner and I've not seen anything that looks like that image

That might be correct, if the tank is mainly soft corals, just doing water changes might be enough to keep the levels normal.

However that is assuming that the top-up system is topping up the tank properly, and therefore that the salinity is correct.

Which salt is it that you're using BTW?

Georgeypudding

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Reply #10

Not used any salt as yet, not been left any salt or instructions to use any. I'm still trying to get someone from the LFS to come out and give me a hand but the recommended guy hasn't called and is now away for 3 weeks, hopefully one of his colleagues can come out next week but I won't hold my breath.

I haven't done a water change yet either, been holding off until I can get some advice as the instructions again are totally useless. My top up tank is definitely being used so I'm assuming the system is working but honestly I am still totally out of my depth with it

ajm83

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Reply #11

Not used any salt as yet, not been left any salt or instructions to use any. I'm still trying to get someone from the LFS to come out and give me a hand but the recommended guy hasn't called and is now away for 3 weeks, hopefully one of his colleagues can come out next week but I won't hold my breath.

I haven't done a water change yet either, been holding off until I can get some advice as the instructions again are totally useless. My top up tank is definitely being used so I'm assuming the system is working but honestly I am still totally out of my depth with it

Don't worry, I still feel out of my depth with my tank tbh  :lol:

When you've picked up a refractometer, post up your results.

Note: it may need to be calibrated before you use it ... basically use a few drops of your top off water, and zero the reading using the little screw

Georgeypudding

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Reply #12

lol do you have any recommendations for a refractometer?

Paddone

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Reply #13

I have the Aqua Marin one and it works fine. They all look suspiciously similar. I expect most in the hobby are all made by the same factory and branded differently.

fr499y

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Reply #14

9 times out of 10 there made in the same factory in china with different branding and slightly different components :P

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