Added new plants. The plants started from trimmings have about doubled in size and some are turning red at the top with no added iron supplements. So it looks like the sandy natural iron bits sandwiched in the substrate is working.
Cut back on Excel dosing by half daily- still using Trace, half dose every other day.
Dissolved a Calcium/Magnesium based organic, no sugar multivitamin that is heavy on minerals-trace elements 2 weeks ago and added it to the tank as an experiment. Got a flush of growth almost immediately afterward. I will be doing this again if the growth slows.
Daily: Stir gently around over the substrate with my hand to loosen organics into the water and do a two gallon partial water change every morning
. Do little trimmings if needed at this time.
Run DIY CO2 during the 4 hour heavy light period starting in the morning.
Lights on for 4, off for 3, then just the two 6500 on for 4 more.
When I shut off lights for the night I run a bubble wand just floating on the surface.
Half dose generic aquarium plant fertilizer once a week.
I will be adding Osmocote tabs (ordered) at the base of heavy feeders.