Who Gives A Fish Forums

If you're not ready for CO2, you could try increasing your Excel dose slightly instead of cutting back. It's a balancing act, but some plants respond better to more carbon. Just keep an eye on them for signs of melting.

Yellowing leaves can be a sign of nutrient deficiency, especially if it's older leaves. Since you're using inert substrate, the plants might need more than just Flourish. Have you tried root tabs? Also, Excel can melt some plants if overdosed. Maybe cut back to every other day and see if that helps.