I spent another 45 mins removing affected gravel from the tank last night.

Ph 7.5 last night, 7.4 this morning.

Another water change this Friday as I've been working late every night this
week.

I've also changed the bulbs on the front of the tank to full spectrum bulbs.
I've had good results with these in the past and these maybe a factor in the
problem as well.

CO2 is now 2-3 bubbles/sec.

Plants are now growing better.

I'm going to keep adding the Kent R/O to raise the GH.

Thanks for all the suggestions everyone.

--
Later.


D.E.

Have a better one.

To email me back, simply remove "Forget.The.Spam" from my address.