I have had my 32 gallon biocube running since October of 2020 and have gone through both periods of great success and tough failures. This is my first reef tank and understand that the hobby is mostly trial and error and that thing wont always go as planned. I have battles dinos a few times and tried what seems like every method under the sun to get rid of them with some success until my most recent battle which became unmanageable to deal with after trying multiple methods. I have been messaging with Fish of Hex and he has told me based on the condition of my tank after showing him pictures that I should consider a reset and start over with all new rock and sand. I think this is the best option for me right now given that I have no fish currently and am sick and tired of looking at an empty disgusting tank. So my question is, where do I even start? Do I have to drain the entire tank or can I replace the rock and sand but keep the water and just re-cycle the tank. Please let me know whatever suggestions you have.