Stunting rotala and white downoi??

I have recently been having a few problems in my tank and am looking for some suggestions to correct them. First the problems
#1 Rotal green and rotoundfolia both are coming in with stunted tips. Its not all the plants just a couple here and there the rest look great.
#2 I have a pretty big patch of downoi plants and a few are looking pretty pale in color almost white in the new growth. Otherwise they seem to be growing fine. Again its not all, maybe 5-10 plants out of the 74 I have in the tank
#3 Green algae appearing on the top leaves of my ludwigia repens "rubin" and palustris.Also on some of the leaves of a blyxa aubertie (sp?) Its pretty soft and you can rub it off if you try. Its not cyno I know that but not sure what kind it is.

The tank is 75 gallons, lighting is 2x55 ahsupply kit and 3 x54 ho t5 tubes with sunlight supply reflectors. Lighting is staggered so maximum watts are on for 5 hours a day. Total lighting period 11 hours.
Water is ro/di reconstituted with equilibrium to 6 dgh and baking soda to 4 dkh. Will be switching to Barrs gh booster as soon as eq is gone. Water ph totally outgassed is 7.6 brought down to 6.3 via co2
Substrate is 100% eco complete. EI doseing 1/2 tsp kno3 3/32 tsp po4 every other day with 20 ml TMG for micros 3x week
Am I missing something or adding too little of something? I've been trying 30 ml TMG 3x week for the white downoi with no improvement. Any ideas or suggestions? Thanks!

 

Re: Stunting rotala and white downoi??

Thanks for the reply Tom. Do you think the downoi color has to do with the co2 also? The bubble count is so high now I can't even try to count it! Its going into a inline reactor on the output of a eheim 2217 filter.
Also, it doesn't seem like the tank uses nitrates very quickly at all. It is very heavily planted with alot of fast growing stems. Every thing has been growing very well with the exceptions of the problems I listed. I also have a problem with my stargrass stunting and melting away? I guess I have more problems then I realize! lol I'll try uping the co2 if I can. Thanks

 

Re: Stunting rotala and white downoi??

ok I guess I will up my dosing on everything then. I upped the co2 a bit today. On next waterchange I will start with 3/4 tsp kno3, 3/16 tsp po4 3x weekly. do you think I should stay at the 20 ml TMG or up that also? I'll give this a try for 2-3 weeks and see how it looks. Thanks for the help

 

Re: Stunting rotala and white downoi??

Just thought I would update this thread. I took Tom's advice and dropped the lighting down to 3x54 T5's. I also switched the co2 to the mist method. I have no more stunted rotala at all, downoi are nice and green and growing like weeds!! Stargrass is growing huge and super fast with no melting at all. So all the plants are doing extremely well but still one problem I still am still getting some green algae on the leaves of the plants and now have some thread or hair algae in my blyxa and a couple other plants.
I dose EI with the following regiment:
Day 1 water change, 5/8 tsp kno3. 5/16 tsp po4
Day 2 20 ml TMG
repeat
Should I lower my dosage since I lowered the lighting? What is the cause of the green algae on the leaves? Thats the one that bugs me the most!!
My water is 100% ro/di reconstituted with gh booster from Greg Watson to 6dgh and with baking soda to 3 dkh. Out gassed ph is 7.4 brought down to 6.4 with co2 on 1 hour before lights and off approx 1 hour before lights. Any suggestions?

 

Re: Stunting rotala and white downoi??

The plants are growing extremely well now. This type of thread or hair algae is a new one to me. I've had hair before and it was easy to remove with a toothbrush. This stuff is a lot finer texture then hair and kind of slimy when you do get some out.
The green algae on the leaves is not spot algae, its kind of thick. You can scrape it off the leaves but it doesn't rub right off. I don't know if that makes any sense or not? lol Its mostly on my dwarf lobelia and ludwigia brevipes leaves. I do have a couple sae's in the tank but they are big and lazy I going to the lfs now to find some more Amano shrimp, there's about 5 in there now so I will get another 10-20 if I can find them Thanks for the help

 

Re: Stunting rotala and white downoi??

Yes I do have some green dust algae on the glass, it has reduced quite a bit since I lowered the wattage but is still there. Will the stuff on the plants die off like on the glass? I am going to let the glass stuff go now and see if it will die off.
The slimy hair algae has gotten much worse the last couple days. Is this stuff from lack of something or an excess of something?

 

Re: Stunting rotala and white downoi??

OK, I guess I just sit back and wait then! VaughnH, did you do waterchanges during the three weeks? Keep adding ferts the same as before?

 

Re: Stunting rotala and white downoi??

OK, the Gd is starting to die off on the glass and on the plant leaves BUT, this slimy hairy algae is getting worse The plants are all growing great but I can't get rid of this stuff. I manually remove as much as I can every day but I am loosing the battle. Any suggestions?