The stunted growth looks like a CO2 deficiency. The yellowish leaves look like low nitrogen. (sometimes things look more yellow in photos, so maybe there's no deficiency there).

 

Ah, the days of rampant nutrient speculation may soon be at an end:thumbsup:

 

Always look to co2 first, but I will tell you that our area is known for Magnesium deficiency and I would have that problem frequently until I started adding a little more Mg. The veining is making me think that is part of the problem.

If you don't know it already, here is a link to find the yearly report. Our water took a strange turn this year. I don't know what they are doing different, but it seems to be running softer. Maybe all the rain?

http://www.amwater.com/wvaw/ensuring-water-quality/page14326.html

 

Thanks for the replies. I think it happened a day I was at work. The co2 tube came unhooked from the powerhead. Then another day I had a problem with the powerhead not coming on at all.

Thanks for the link Sara. My water comes from point pleasant which doesn't come up on that site but the source comes from the ohio river also. I'll start adding a bit of Mg and see if that helps. I don't think it's a N problem. I tested out of curiosity and it was about 30ppm right after a water change.

Like I said I have always had this problem with glandulosa. It is my nemesis lol. Maybe this time I'll win.

 

Yeah, looks like CO2. Check out Sewingalot's thread on nutrient deficiencies. She has a few lack of CO2 shots.

 

I've grow this plant for some 15 years and it only does poorly when I've messed up the CO2.

Curled cupped leaves etc, smaller progressive tips growth, all CLASSIC CO2 issues.

 

Ah, I see you are on the other side of the street. Considering your powerhead issues, it is definitely sounding like co2. Here's examples of my ludwigia and bacopa with crappy co2:

 

Yeah, co2 looks like the culprit. I another problem is that my tanks have dead spots. I tried this evening to redirect the outflows of the filters and even installed another maxi-jet 900 in the 40g to get more movement around the tank. I hate having all that equipment in there though. Here are videos of the tanks. Does it look like there is enough movement?

http://s20.photobucket.com/albums/b207/peglegburnout/?action=view&current=SANY0285.mp4

http://s20.photobucket.com/albums/b207/peglegburnout/?action=view&current=SANY0284.mp4

 

Well I got home tonight to find the drop checker in the 40g blue as can be. The co2 was on and everything was working. My rainbows were gasping. I moved a powerhead so that it was injecting air into the tank. They are still gasping but not as bad.

Not sure what happened here. The drop checker and plants are saying not enough co2 but the fish are suffering. Could be the heat also. The tank temps are in the low 80s.

I don't remember getting the co2 dialed in being as hard the last time. The answer is probably right in front of me but I've been up for 18hrs and have to be back at work at 6:45am. I'm too tired to think straight.

 

Ok I think I know why my co2 crashed. Last friday I installed new bulbs (ge 9325k) and that coupled with the fact that several plants are heavy feeders and I installed another powerhead for more surface movement must have depleted the co2. I cranked it up a good bit last night and got the drop checker a nice greenish yellow. I put the extra powerhead on a timer to come on after lights out. I still have signs of co2 deficientcy on L. brevipes and R. macranda green and R. rotundifolia. Somehow the R. macrandra 'narrow leaf' was unaffected which is strange because the other rotalas are in good water flow areas and it isn't.