I added a 48" t-12 fixture,
with two 40 watt Iguana lamps.
This has 7% uvb at 12 inches.
I also swapped out two 400w HPS bulbs
with two Sunmaster Cool Deluxe MH 400w bulbs,
in two of my digital ballast.
fuck man....that is a REALLY nice setup you got going there!
btw...I have the same CRAPPY chinese trimeter thing. Got it cheap off eBay. What can I say....you get what you pay for. I find the EC more reliable than the PH. The PH gives fuicking crazy readings. Good job I got it mostly for EC as I have a reliable PH pen already.
With my Trimeter you can only measure PH and then measure EC/PPM etc, you can't do both together or the readings go really wacky! Wish I hadn't wasted my money. Should of spent a bit more on some proper instruments!