OMG! I am so happy that I found this thread! probably gonna empty out my AC70 in the next few days and throw a few plants in it. My question is this, I have a 90g(long) Festae grow-out and will get a 180g in a year or so when the pair forms and gets a bit bigger. How many porthos, arrowheads, or so on is a good starting point for a 90g tank with 7 Red Terror fry and a Synodontis? I'm looking to rid my system of Nitrates and Phosphate. My current Filtration is a AC70, AC110, Xp3. Would I need both HOB's for plants? If this established well could I just set up the Xp3 with straight mechanical? Don't I still need BB to break down solid waste in the tank? If I'm reading 0's across the board what should my WC schedule be? 50% a week still? I have so many questions I just want to get this right! Also is there ANY plant that can be kept underwater in tank with Festae? I hate how people say that NO plant ever works with Cichlids EVER! I run two 3' Coralife t5 dual bulb with 10k+actinic.