I got my tank set up last weekend, and started going on my fishless cycle. While doing that, I'm keeping a close eye on all of the parameters, and I've been boggled by my ridiculously high pH! It was at 8.2-8.4, whereas my tap water was reading 7.4. The tap water level would be okay for most of the fish I want, if not ideal... but 8.2?!
So I researched and researched and researched. What could be causing this? Is Flourite known to raise the pH? What about play sand? I have both... I wasn't adding anything other than the ammonia to get the cycling going, but even that shouldn't be raising my pH to what it is.
And for whatever reason, I kept forgetting about my rocks. I wanted to go for a river-bed looking set-up, with some sand for my eventual corys to be able to dig around in. I also got pond rocks when I picked up the play sand. $5 for a huuuge bag of rocks? Heck, yes! And they look really awesome in my tank... it looks very natural, and will look even better when the plants start growing in.
But today, it hit me. Those rocks might be responsible.
Soooo, today will be pulling out the rocks & testing them, then deciding if I want to keep the ones that are NOT limestone. Hopefully they'll be enough of them to do something with.
Or maybe once I pull them all out, I'll be so annoyed that I'll just leave them out. But then my tank will look so bland and empty. :/
I just can't believe I was so gung-ho and silly that I didn't even think about the rocks before I bought them (at least they were only $5!) and that I didn't consider them while being baffled about my pH.
Well, here goes. My tank is going to be such a mess after this...
And, somewhat related, I hope my crypts can handle this okay. Two of the three really just started taking off the past day or two, melting their old emersed leaves and growing new ones. Now I'm going to be doing a 90% WC and probably adding more substrate, as I had some rocks in the substrate as a wall to separate the sand from the flourite.
At least I know my nanas will take it well. They don't seem to care about anything. They started growing the first day.