As some of you might recall, we are having some problems with high ph in this tank. We have come to the conclusion that it is the black sand that we picked. Even with all the plants and DW, there is almost no buffering. A new project is being planned and the tank will be re-vamped. We're discussing going with the 3M color quartz like we have in the 80g mixed with Flourite black. After testing the water in the 80g last night before and after a 50% water change, the ph only raised from 6.6 to 7.0.
This action came about after I did a PWC of not even 10g and the ph spiked to 8.4, which in turn killed our soon to spawn kribs.
*Sigh* Hopefully this works.