What type of lights you got on this again? Looks like all your lower leaves are dying off and new growth up top (closer to lights). Some more trimming would make those fill out more.
The lights in the L. Repens tank are Sylvania Ultra-mini CFL 6500K 13watt x2 bulbs with incandescent hood.
The lights on the Wisteria is a single 15w T8 6500k Coralife Nutri Grow...
Previous attempts have been:
1. a 36" Dual t5 strip with 2x21 6700K Daylight lamps from Aqueon. That was ok but a little to short and T5 flora bulbs are too hard to find in low watt H.E (sometimes called N.H.O) ...
2. A dual 48" t5 strip with 2x28 6700k Daylight lamps from Aqueon. The Repens liked this at first but the Wisteria hated it .. it was too much light and with no Co2 injections the Wisteria experienced heavy Co2 deficiencies with browning, yellowing, cupping and falling off leafs... it almost killed the wisteria.
The Repens had mushy stalks and lost all those bottom leaves .. i lost a bout 70% of the bunches of the Repens. So what your seeing is that the leaves all died off about 2.5 months ago and the Repens are just now becoming stable again with firm stalks and good top growth.
3. I tried my Dual 48" hood from my 55 just with a single 6700K H.O bulb and Wisteria got even worse.
In the end, Aqua Chem and I solved the light problem for now, or at least it's stable. I went to the bulbs mentioned first above and started treating with API Co2 Booster and Sea Chem Flourish (non-excel version) just for immediate help and in the interim till I can find the right lighting and get the DIY Co2 Setup up gowing at the same time... I have the Co2 DIY bottles and glass nano diffusers here and ready but I hit a low patch with work and waiting till work becomes steady soon before I buy the lights...
I am thinking of going for these but possible in 36in version that they make i just have to track down.
Sunlight Supply Sun Blaze T5 HO Strip Light 24 Watt 6500K 24 inch
Those are H.O fixtures so it won't be that hard to find the flora bulbs for T5 if i go with Zoo Med Flora sun... I'd like to do a 6700k for the Repens because it loved the 6700k but brown algae really likes that 6700k I found out...
I'll take suggestions on hoods or bulbs... Aquachem recommended a good 36Watt CFL U shaped inline hood and I may go with that one on the Repens because a lot of sites report that 3x or 4x the normal WPG will help the Repens really turn read.
Ps... you mentioned trimming, do you mean doing cuttings and taking the tops off and replanting or is there a way to trim the stalks to promote new leaf nodes? If you look closely they Repens dose have bright green baby nodes on each stalk segment... I was thinking of upping the lighting to 10 hours a day to promote a leafy cycle versus a flowering one at 8 hours a day
Sorry for wall of text lol. Just giving you the Cliff's Notes back story without you having to read all the posts of the thread
thanks for post .