I'm struggling in making a decision between FX-STP wifi peristaltic pump and Syncra silent 0.5 (or 1.5) pump for a calcium reactor. Everybody says FX-STP is more suitable for a calcium reactor but I'm worried about the noise. I know how noisy a peristaltic pump is because I own an Apex dosing DOS. I wish the FX-STP would be much quieter. Anybody who owns one can share your experience? Thanks.