unless low light, plant deficienties

Hi after a lot of algae problems , i lowered my light untill 1w/g (2 bulbs ) . Tank 80 G. The thread algae are gone now and i only have fuzz algae. But unless EI and Co2 , i have plant issues. Soms stem plants have deformed new growth (hygrofila stricta) and oter green stem plants have tissue (yellow/brown) problems between the leaf veins. Some leafs turn reddisch. Ca deficientie doesn't seem the issue because gh is 9 and 1/w i add 1 teespoon gh booster. Ph controler at 6.8 kh 5/6. Dropch. is in a goood range. Could too much EI cause these problems????

 

when i increase light untill 1.5w/g , what would you advise about ei dosing regime? how much po4 no3 ferts? For co2 i use a inline reactor ph controlled. so the dispersion must be fine. I lowered light because that is the only way that i can "control"my Tank, In the past more light was more problems to me. But i will try again, and again and again........ Thanks

 

Today i made a stock solution (4kh)for my dropchecker according writen on this forum. My drop checker turns green/yellow. My ph, after start light en co2 valve , is within an our in de wanted range of 6.8 (it starts from 7.3). I assume my co2 level is in a good range, unless that my plants (stem) have stunted/twisted abnormal growth, some leaves that have to be green are turning red. kh is 5/6 gh 9. EI as advised for 80G. I wil install a corlia pump tomorrow. Besides fuzz algae i have also green spot algae on older hard leaves of stemplants. 2bulbs of 36w. I'm intending to increase my light to 3 bulbs but i doubt if this is good. What causes stunted growth? Do i need to increase co2 a little more ?
thanks folks

 

update

Here is a update of my tank. I increased the co2 en the current during the last weeks. Also more surface movement My plants are doing much better as before, also i got almost rid of the thread algae. Fuzz algae only on older and bad leaves.
I also tested the kh (of tap)several times, it turns to be 2 a 3 , so i lowered ph from 6.7 to 6.4 at this moment , and i tend to lower it more step by step.

I dose 3x 1 gram csm-b, and other days
3x weekly 1 ppm po4 and 2 ppm no3 (because my tap has 30 ppm of no3) and 10 ppm of k2so4 (80g tank and 1.5 wpg).
Unless my tank is doing much better, i have some algae issues andsome plants keep stunting like hygrofila stricta.
DSC04991.jpg picture by guytillmans - Photobucket

and a other plant(i don't know its name, you do?) has curled/stunted leafs and is colouring red at some edges. The entire plant grows good but does't look like that!
DSC04992.jpg picture by guytillmans - Photobucket

I've read that a lack of nitrates can cause that some green plants turn reddish(carotenoids). But my tank should have enough no3 because of the tap water (30 ppm) and the additonal 6 ppm weekly.
Should i increase co2 a little more? Micros and macros seem fine to me, not?
What causes the stunting, curling ?

thanks

 

Nobody answers?

 

Thanks i wil increase my co2 by 0.05 step (ph) /week. I'm a little bit concerned about my fish though. I've little fish load. They"hide"all day between the plants and don't show up, later in the evening when light gets low, they show up or when i feed them. They never go to surface and have heavy breathing paterns, but the fact they are less active during the day concerns me, especially now i am increasing co2.
th

 

Ok Thanks, my oto's are fine at the moment , so i will slightly increase the co2

th

 

Update

After a few weeks battling with my co2, i've set my ph controller at 6. (kh 3 a ). Beneath 6. my fish seem to go to the surface and not swimming around anymore. So i think that 6.4 is the limit for my tank, Unless that i am also battling with gsa. Not only on old leaves from slow growing plants , but also on older leaves from fast growing plants. I increased po4 by 3 ppm per week, no changing in gsa for 2 weeks. Current seems good(estimated 8 to 10 times of my 80 G tank). There where the current hits the front glass, there are no gsa, further away they occure time after time. Can excess of macros and/or micros cause deficienties??
Light is 1.5 wpg for 9 hours.
I dose micros 3x pw 1 gram and po4 3x 1 ppm k2so4 3 x 10 ppm, no kno3 because of my tap(cantaines 30 ppm). WC once a week 50%.
Should i try to increase co2 a little bit more?