GH is too low. should be at least 4. 4 to 6 is the target range. Increasing the GH will also increase the TDS to a more desirable range (in the mid 100's). But to be honest with you, I dont like the idea of fighting your water all the time. Thats what your doing by using peat is fighting your water. Eventually something will go wrong, your peat will wear out and before you know it pH is swinging all over the place. It is much better to start with RO water and add the necessary minerals back in to raise GH. Just my opinion man. I have kept alot of tanks at many different parameters and have had enough bad experiences to learn not to try to fight your water. especially when pH is drastically high like that. The slightest change could throw your pH all over the place. Also, thats pretty darn high pH to only have 2-4 degrees of carbonate hardness. My pH comes out of my tap at 7.8 and KH is 6
looks like your water ph is too high, i dont think your crs will thrive in the water parameters you currently showing, it is best 5.0~6.8 max.. >.< i think 6.5 is pretty even... 6.8 didnt work out for me back then... they are alive but not breeding.. if you want to keep it just to watch and not breed is ok.. but i don't think that is the case.
~.~ by the way when you do that.. make sure buy a strong airpump.. the one that supplies 30 gallon and 50 running 5 tubes cant really support therefore i have to spend money to buy a stronger airpump.. if you do decide to get one get a strong one better to be safe than sorry.. i started with 1 tank now i have 6 tanks ... >.< and air pumping the water that i do wc