Hello everyone I believe I may have fixed my algae problem! finally! :)
So at first i told myself i bought too much light for a 26 g with a dual 24 inch t5 HO fixture with a 10 k and a life glo in it, but I already had algae problem before I bought it and had a single 15 watt t8 life glo
So at first I had big algae problem with the dual t5 so I bought some floating plants mainly duckweed(that stays in a rather small quantity as my black ruby barbs like to eat it) but I also have dwarf water lettuce wich is already filling up half my tank with half of a hand full. That helped alot but I still had algae growing so I used a technique of leaving some algae growing in my filter(fluval c3)outlet that helped a lot but wasn't very nice. so after i cleaned it up I had the same problem again. so then i remember reading that sunlight even tho small can affect algae growth by being able to photosynthesize while the plants cannot(if aquarium lights aren't on) so what i did last week was to put my light back on 12 hours instead of 8, from 7 am to 7 pm that helped a whole lot
since the plants where able to compete for phosphate against the algae(I guess) but i still had some algae to scrape off and from the side with most sunlight, so what I did Is i went to a webpage that tells me when sunrise and set and now I'm changing my timer so it light up at sunrise(since my window is facing that way)
I clean my aquarium every Sunday and normally by today i can see algae now I only see crystal clear water with no algae growing! And plants are thriving I hope this keeps up !
and sorry for the long story I didn't know how to make my ordeal shorter :P and sorry for the my structuring and mistakes my main language is french and English Is pretty much self thought to me!