[oregon aqua]

Hello and welcome.

First off shaking it kills the yeast faster, since the yeast is already killing itself when it makes the alcohol less help is better. The days i did do DIY C02 i found it very nice to run multiple bottles (at one time i was running 4) staggering the weeks you make the new solutions helps to keep a constant supply of C02 for the tank.

My best secret was to keep the yeast warm round 75deg as i found it produced more Co2 though it did not last as long. I did this with a small bulb in a fixture( that was a hard way to do it) then i found a tank heater mat for reptiles that worked very well.

I strongly suggest the sticky http://www.aquaticplantcentral.com/forumapc/showthread.php?t=14453 Its a good read and very helpful.

 

[oregon aqua]

are you dosing any Macro ferts?

I realize now that your first post didnt say anything about macros and yellow leaves is a sign of Nitrogen deficiency.

 

[oregon aqua]

i am given them 5ml's iron and trace plus from ocean nutrition my tank is 103gallon and right now running 1 t5 54watts because i was running 2 by 54 watts for ten hours one white one pink and had a problem with brown algae so now i only run 1 tube of three that in it for ten hours
thanks
MaRvIk

The Ocean Nutrition trace+ is called a Micro or trace fertilizer. The iron is a trace fertilizer to. You also need some macro I.E. potassium, nitrogen, and Magnesium. Sticking with the ocean nutrition brand ferts theirs would be the Fertil+ bottle. it does not contain Nitrogen so im assuming they are thinking you will get It from natural sources (nitrogen cycle).

here is a good chart for helping on deficiency symptoms.
http://www.csd.net/~cgadd/aqua/art_plant_nutrient.htm

Edit: adding the macros will help balance the tank so algae would be less of an issue. allowing you to use both you lights, even at the 108 watts i would consider it a very low light tank and you may have trouble growing some plants.