Yes I am injecting CO2 and even that I am not sure if I am getting to the right amounts. My light is a finnex planted plus but I do not use the 24/7 feature of it. Well not the way it was intended anyways. It is customized to come on at 1200 (very low) and then ramp up to full brightness at 3pm and then the full brightness is on until 6pm where it ramps down to dark at 9pm. I used to have it be max brightness from 12-6. My spiderwood had crazy amounts of the white fungus stuff and only with me turning the light schedule down to a smaller "full bright" period and the addition of CO2, has that started to go away.
I wish I would have had more plants when I started. I thought what I ordered would be plenty, and there was a lot more in the tank than there was when I first planted. I bought a "starter pack" from Dustins Fish Tanks that was $100 and being naive I thought that would be a butt ton of plants. It was a decent amount but really I would have needed may 2.5 of them to really plant the tank heavily. There was maybe 75% more of both the hygrophila and the ludwigia but they didn't make it. I got lots of stem rot right at the substrate and wasnt able to keep them planted. Some of them melted all the way to nothing and did not grow roots. So what I have left in the tank is what has survived that initial purchase. I have since bought the bundle of the wisteria and the sprite. (thanks for that by the way). The bundle of wisteria is not planted in the substrate. It is just in the bundle, loosely wrapped in a plant weight. I want to take it out of the bundle but havent decided where I would want to stick it and of course I am worried about stem rot again.
I am not so sure that I do not have a problem with flow either. For me, its hard balancing flow and trying to make sure all of my CO2 isn't aerated out of the tank by surface agitation.
I have an 8 gallon betta tank that I have no problems with. Well besides trying to grow dwarf sag in the gravel. Other than that my java ferns are doing well as well as my narrow leaf ferns and my anubius afzeli. Cycling that tank was easy, it doesn't have CO2, its low light.....I thought I had it all figured out and wanted to go bigger and better.
High light, tons of plants, CO2, dirted, more gallons, more fish. For the most part it hasn't been the worst experience, I have just realized that I dont know near as much as I thought I did.
Thanks for all of the words of advice and information. I appreciate it!