plants melting

Correct me if I'm wrong since this is observational at best.

Past experience which is actually more current then past.

I recently experimented with higher lighting to test different scenarios in my 150g which has Aromatica in it.

I upped my HO T5 lighting from 8hrs 160w / 3hrs 160w midday to 8hrs 240w / 4hrs 160w. So within my lightings setup abilities a moderate increase.

To compensate for the additional lighting I scaled up my daily dosing a smidgen for a 20 day test cycle. But mistakenly did not compensate to add additional GH.

The only plants that seemed to be affected was Aromatica and Polyesperma 'Sunset. The bottom leaves of the Aromatica melted and there was significant color loss (a few plants became a pale yellow to white). also the stems bent as if to not grow upwards to reach the lighting. The same thing happened to the Sunset but without the major leaf loss. All other plants did fine and really without a big difference in growth rates. The only notable difference was Limnophila sp. 'Mini' and Ludwiga Glandulosa colored up from maroon to purple. Lotus growth skyrocketed with massive leaves. Rotala sp Green, Stargrass, Blyxa J., Mattagrossense, Rotala Colorat, Hygro 'Tiger'; all grew a little quicker but as far as any aspect physiologically with no difference to justify the increase in lighting.

I'm confident that I have adequate flow; 2 1200gph pumps, one as a booster to a C360 canister, the other to a diffuser/polisher.

I'm also confident that I have adequate CO2, although this can always be a "?". I utilize both mist and diffusion. Drop checker is yellow/green 24/7 with 4 dkh solution. I get very little change in drop checker color over the course of the evening.

Can Aromatica suffer in this scenario from to low a level of Ca and Mg? I seem to remember reading in the past on APD that Aromatica coloration can be improved with increasing GH, but I may be remembering incorrectly.

I'm a week tomorrow back into the original lighting and dosing routine and the Aromatica is starting to regain its coloration. Even after replanting the tops and taking a few inches off the bottoms.

I know there is a lesson to gain from this, besides don't forget to increase GH Booster along with lighting.