Can't remember which crystal salt it was we were using when we set up our 120, but it had phosphates in it! We couldn't figure out why the algae was so bad, the had our RO
water tested, then the RO
with salt and the test went through the roof! Just be careful switching salt, you may get something crappy like we did :/
Your doing a great job though, keep up the good work, and keep posting pics as your tank(s) come along!