First, can you get us some data or an estimate on the PAR and PUR values, at the substrate, for your lighting? See this post for an understanding of how important this is: https://www.plantedtank.net/forums/1...ml#post1951160
Although much depends upon pressure and equipment, I suspect that 1 bps is far below ideal. My 29-gal has bubbles so fast I couldn't possibly count them. Instead of using bps, focus on CO2 ppm. In a high-light tank (and we're not sure yet if that's what you have), you'll want ~30 ppm CO2 for EI setups. A roughly 1 full-point drop in pH between fully degassed water (tank water that has sat out for a few days) and your tank water a few hours after CO2 is on will approximate 30 ppm CO2. Another method is to use this calculator: Rotala Butterfly | Planted Aquarium CO2 Calculator
I've raised lighting, lowered lighting, lowered schedule, raised co2, lowered co2, raised EI ferts, lowered EI ferts
changes were too fast, you may have destabilized the tank, including plant health. It can take two weeks, or more, to see the effect of any given change. Plants don't like inconsistent environments.
Can you provide some of this info (more is better):
- Current NO3, PO4, GH, KH, pH and TDS readings.
- What you are dosing and how often.
- Cleaning regimen (filter and water change frequency and amount).
- Circulation (all plants gently moving from top to bottom).
Root tabs aren't necessary if the water column is dosed sufficiently.