So Iāve had this tank set up since the winter and canāt seem to get things to go right. Iāve got fluval stratum substrate, 2 fluval 3.0 lights, an fx6 filter, and pressurized co2. I had been using thrive all in 1 fertilizer, but recently switched to the GLA dry ferts about 2 weeks ago. For stocking I have about 60 cardinal tetras, 25 phantom tetras, 1 SAE, and 3 dwarf chain loaches.
My plants grow bright new growth, but old growth quickly dies off. Old leaves start by getting covered in dark green/ brown gunk, and then start dying off from there. Nitrates are very high 60-80ppm, and are back high again within just a few days of a large 40-50% water change. I use a mix with mostly RO water as my tap water is extremely hard. I saw no improvement all when switching fertilizer. The plants I have currently are all relatively easy but nothing does well. S. Repens, limnophila aromatica, ludwigia repens, jungle val, Amazon sword, AR mini, and blyxa japonica.
Any advice would be appreciated. I Canāt figure out what Iām doing wrong. All my plants grow great in my 40g but start showing these deficiencies in the 125g despite plenty of ferts and high nitrate levels.
My plants grow bright new growth, but old growth quickly dies off. Old leaves start by getting covered in dark green/ brown gunk, and then start dying off from there. Nitrates are very high 60-80ppm, and are back high again within just a few days of a large 40-50% water change. I use a mix with mostly RO water as my tap water is extremely hard. I saw no improvement all when switching fertilizer. The plants I have currently are all relatively easy but nothing does well. S. Repens, limnophila aromatica, ludwigia repens, jungle val, Amazon sword, AR mini, and blyxa japonica.
Any advice would be appreciated. I Canāt figure out what Iām doing wrong. All my plants grow great in my 40g but start showing these deficiencies in the 125g despite plenty of ferts and high nitrate levels.