A couple of months ago I upgraded an 8 year old 80 litre low tech jungle style aquarium that had a gravel substrate with a small amount of peat and laterite, was lit by 2 old T8's, filtered with a Fluval 2 internal, and with no ferts or CO2. This aquarium was planted with various Cryptocorynes, Anubias, Java fern and moss all of which were thriving.
The substrate was replaced with ADA powersand and Amazon soil, the lighting with an Aquaray Grobeam 500, and the filter with an JBL Cristal profi 80. I transferred all the Crypts and added several new species, hairgrass, and hygrophila polysperma as a fast growing filler. I have been fertilising daily with seachem flourish and liquid carbon. The trouble is that while the Hygrophila has been growing fine all the Crypts and the hairgrass are extremley stunted, the hairgrass, C. parva and x willisii are no more than 10-15 mm tall; the various C. wendtii varieties and other species no more than 5 cm. All the leaves look otherwise healthy with good colour.
Does anyone have any ideas as to what has happened here and how I can restore my Crypts to their previous robust health?
The substrate was replaced with ADA powersand and Amazon soil, the lighting with an Aquaray Grobeam 500, and the filter with an JBL Cristal profi 80. I transferred all the Crypts and added several new species, hairgrass, and hygrophila polysperma as a fast growing filler. I have been fertilising daily with seachem flourish and liquid carbon. The trouble is that while the Hygrophila has been growing fine all the Crypts and the hairgrass are extremley stunted, the hairgrass, C. parva and x willisii are no more than 10-15 mm tall; the various C. wendtii varieties and other species no more than 5 cm. All the leaves look otherwise healthy with good colour.
Does anyone have any ideas as to what has happened here and how I can restore my Crypts to their previous robust health?