Was wondering how much anyone else was dosing with TPN+? The dosage recommends 5ml per 50 litres per week, followed by a 25% water change every 2 weeks. So i have been adding 60ml per week for around 600 litres (tank 720 litres - rock - substrat), and a 25% water change every weeks, usually. Does this sound right, or should i be adding TPN aswell as TPN+. Should i be adding other ferts too? ADA ones?