First time owner of cichla here and will be getting a shipment of Kelberi tonight. I know it will take some time to transition to pellets but was wondering if there is a general rule/consensus to what pellet size to use? The kelberi are ~ 7" currently. I'm likely going to go with NLS and have seen the 3mm, 6mm, 7.5mm, and 10 mm available. Any suggestions on where to start and the max pellet size I would eventually need?