Hopefully once I get EI, everything will do much better.
I also hope that once you begin to use EI everything will do much better, although I doubt it. Your plant biomass (according to the pictures) is very low, and EI is extremely exagerrated fertilizer method even for densely
planted tanks under high light. Plants can grow fine even under very low nutrient levels => like the ones in Amazonas river → the bigest river on our planet with one of the most diverse ecosystem in the world [mean values]: 5-8 ppm CO2, 7 ppm HCO3, 0.4 ppm N (= 2 ppm NO3), 0.01 ppm NH4, 0.025 ppm P (= 0.08 ppm PO4), 0.9 ppm K, 7 ppm Ca, 1 ppm Mg, 2 ppm Na, 3 ppm Cl, 4 ppm Si, 0.1 ppm Fe, 0.006 ppm Mn, 60 µS/cm conductivity.
So most aquatic plants can grow very well under 10 ppm CO2, 2 ppm NO3, 0.1 ppm PO4, 1 ppm K, 7 ppm Ca, 1 ppm Mg, 0.1 ppm Fe, given you use some soil substrate, high light, and make regular water changes once a week with fresh, new nutrient dosage. If you want to be safe, you can double some of these values (like NO3, PO4, K, Ca, Mg), but there's no real need to go any higher. And if you experience any deficiency symptoms under these levels, it's hardly caused by too low amount of nutrients, but rather by some other factors (like poor maintenance, bad nutrient distribution via decent flow, insufficient light levels, etc.). Some symptoms of bad growth may be also caused by toxicities, not deficiencies.
I don't want to go into war with EI users here. So, if EI-users' arguments seem better to you, just discard this post.