[T Jager]

Hello all ive been trying to fine tune dosing on my 75 and looked up my water report online (http://www.eriewater.org/wp-content/uploads/2007/12/2012-finished-water.pdf) and was wondering if someone could help me in understanding as far as calcium and magnesium is concerned if I need to dose it using EI. Thanks in advance.

 

[jfynyson]

You should be ok...enough that it may be worth trying without any adds then it's easy enough to add back later to see if it helps with growth. Mine for example is soft and low alkalinity but still enough. I found that adding more Mg helped plant growth & health...so you should experiment !

 

[T Jager]

Thank you for your reply. I'll do some experimenting and see what happens.

 

[Hoppy]

You have plenty of data in that report to see that magnesium is a significant part of the total hardness of the water. I don't think you need to dose any magnesium, but it won't do any harm if you add a little with each water change.

Your water is pretty soft, so you might want to dose GH builder with each water change.

 

[T Jager]

Thanks for the advice Hoppy. Ive really enjoyed reading alot of your posts, always very informative.