MSNL/Do-Si-Dos Auto

The seller on Amazon didn't waste ant time shipping the new airpump, it arrived on Monday. I knew it wasn't gonna be big being on 16w but I was shocked how small it is...about the size of a baseball-but way more powerful than the pump I'm replacing. Got it hooked up and it's working our great and the plants have responded as well. Put up the netting to assist with training. By Friday my reservoir readings started reading a bit more acidic(5.4) and a decrease in ppm(850) so I added a couple gallons on full strength solution to top off. I didn't add the full amount of down to help pull the reservoir pH back up to about 5.8. Starting to see some early preflowers, the transition will be approaching soon. Once the tops start to switch over I'll begin transitioning to the flowering phase of my nutrients.