Cheers for all the replies,
Hoppy my lighting fixture is a T8 Ballast x2 T8 Bulbs which are:
1x Life Glo T8 15w combined with 1x Power Glo T8 15w.
I just purchased these to replace my old one's as I had them for a year and plants were not growing as they use 2, there's not much upgrading options for my Fluval Roma 90 as it has a nice chunky black rim around the top on all sides which is annoying and a hanging fixture would of lit the room up to much and tank is next to tv so I didn't want to ruin my whole room, and my diy skills are not good enough to build a canopy, but I don't mind low/med light plants, I have LOW light I have always presumed, but I have some MED light plants growing the best imo but I read they can survive low light 2, I try to do my research first before buying a plant, I struggle to get carpet plants growing but have just purchased some Blyxa Japonica to give a try.
I also have reduced my light period from 10 hours to 9 hours, trimmed up my tank, rubbed as much algae of the good leaves to try save them, and also have adjusted my diy co2 to 1/2 tsp yeast, 2 cups sugar, its been going 2bps for 4 days straight now so seems more constant than my old mix and have added 3 oto's to the tank and will be adding another 2 and soon to be adding shrimp, them combined will hopefully be my algae crew and keep it under control or at least help this situation while I address my CO2 problem "if my new mix has not already fixed it" is 2bps good for a 20g? My drop checker indicates green again, it is not as green as it use to be, more of a darker green but still green, just not yellow/green , but its not blue. I think I am going to buy a KH kit and then try to work out my CO2, I know my tap water is 8ph and since the introduction of CO2, its around 7ph now, so once I get my KH I can look at the chart for my co2 ppm levels.
Thanks Jahn I will look through that thread, I did take a look at the DIY pressurized co2 thread then a lot of people said it was unsafe so I kind of thought I don't want to waste cash when I only have a 20gallon and maybe a manufactured kit would do the job for me at a little bit more cost for the replacements, but ideally I would prefer to stick to DIY yeast, if so many people are accomplishing beautiful tanks with it, then I want to try to perfect my recipe, no doubt I want to go pressurized in the future though if I cant fix this problem with DIY yeast, so once again I will look through that thread and try get my self knowledged up on pressurized systems, if I was more confident in my self with DIY I would spend £100 or more now and get what I need, but I'm a bit hesitant, hence why I don't want to give up right yet.
Cheers AirstoND for the answers, I dose EI so I just presume I need the CO2 for the EI method to work, other wise the plants won't take it up, there are no specific plants I want to benefit, I just want all my plants to flourish and grow and I learnt CO2 and nutrients are what they need so I hope I'm doing the right thing.
Hygrophila Corymbosa "Angustifolia"
Cryptocoryne beckettii "Petchii"
Anubias barteri var. nana
Lilaeopsis brasilinsis < finding it so hard to get this plant to do anything, it grows but does not spread, so will replace with Blyxa Japonica
Vallisneria of some kind
Sagittaria of some type
Wisteria Hygrophila Difformis
7 Marimo Balls
I think that's it might be another one or two, I also want to get another Cryptocoryne, some kind of large Echinodorus and another Anubias or two.
Here is a pic of my tank before I even learnt about this hobby, and It was more of a ornament tank back then, and I had no idea about CO2, ferts etc, the plants did well and I don't remember algae being a problem, but the algae did arrive sometime when the tank was just ornaments, I then purchased more plants and more to out compete with the algae, It didn't do much, I then stumbled upon this hobby a few months ago and have since learnt about co2 , ferts, etc and I learnt co2 can remove the algae but no luck yet, this is why I cant understand if my co2 is fluctuating as I had the algae before co2, I don't QT my plants I don't know how, I have no spare tank, I presume this arrived on one of my plants
Here is a pic of my tank recently, the plants in the pic are not to long after purchase from stem cuttings, they have grown much larger, my java fern has also recovered from Ebay lol, and my java moss, still has not made its mind up, my Wisteria Hygrophila Difformis now routed has took off and is slowly taking over the tank, its prob my fav plant right now, but as you can see in the pic below there are a lot of leaves looking poorly for them selfs, algae killing the lower leafs and potassium deficiency, its also quite embarrassing as you can see I am not a aqua scaper lol, I purchased a massive plant pack from Ebay and just popped plants here there and everywhere, but slowly adjusting it.