Add Calcium to your DI water

[RCFA]

I will try to do this today or tomorrow. I will take readings and post them as soon I can. hopefully other may try this and we can compare results.

[mark]

I run a storage (bladder) tank off my ro/di, wondering best if the sand cartridge before or after the tank (or doesn't matter).

[RCFA]

I would put it after just to prevent any sand particles from carrying over into your storage tank, but it really doesn't matter.

[Chowder]

Would you be able to run this in place of a calcium reactor? Maybe threw your ATO.

[Reefer Rob]

I'm curious to see if this makes a difference. I've got a few spare cartridges kicking around somewhere, maybe even a clear one. I think I'll try setting one up right before my ATO goes into my tank. Flow should be nice and slow there. Too bad all my old sand is now in the garden

[mark]

haven't set up myself yet, wondering if anyone has results?

[viperfish]

I have done something similar. I used an old Aquaclear 70 filter and put in a bag of aragonite. I have the filter hanging on my top up resivoir. It buffers the water just fine, I doubt if there is enough top up water going in the DT to keep calcium levels up.

[DiverDude]

ok, noob question here: Isn't the idea of a RO/DI filter to get something as close to pure H20 as possible so that you can add salt to it to get 'seawater' which contains all these elements -but nothing else ?

In other words, doesn't the SALT add all the necessary trace elements ?