04-26-2007, 12:52 PM
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You may think that I have "lost it" after reviewing this post but I am speaking from experience.
I have PhUp, PhDown and some type of mineral additive (for my RO water) but have never used any of these.
The wood in my tank still releases tannins when I "have the air diffusers going".
I have two "holy rocks" (limestone) in my sump to neutralize the acid, buffer the Ph and provide trace minerals.
My angels have grown from nickel and dime size to 3" to 5" size and only one has died (the day after I received him).
Please note though that I am not familiar with the water parameters necessary for keeping Lake Malawi cichlids.