I'd like to get some opinions on the growth patterns in this tank. This tank gets dosed EI Macros and alternates between a .05ppm of CSM (Fe is the proxy) with .05 of DTPA Fe and Flourish comp (.1 of Fe dosed 2 times a week). The phosphates have been low the last few weeks and some plant are showing phosphate related issues in the older growth. I am not sure if this is an advanced phosphate deficiency or a trace issue. Thanks for your input.