Chemistry messed up

[blk822822]

My cal. is about 550 and my alk is at 7-8. I have been doing water changes to bring down the cal. because it was higher. Today I got a alk test kit to see that my alk. was at 7-8. I still need a Mag test kit but have added just a little mag. Is there a home remidy to raise the alk??? or do I need to buy a buffer? and is there a Mag test kit that dosn't cost a fortune? The ones I see at the LFS are like $35.

 

[kungfuchan2000]

http://reefkeeping.com/issues/2006-02/rhf/index.php#12

Hope this help.

 

[blk822822]

Thanks so much I will give it a try.

 

[returnofsid]

In my signature, you'll find a link to Randy's recipes for DIY supplements, which are also linked above.
Also, in my signature, you'll find a link to a Reef Chemistry Calculator, which will help you determine how much to add.

Both of these are invaluable!! I just mixed up new Ca and Mg supplements, earlier today.