@Ocean_dreamer89 Reefer 250 owner here myself. I love my tank I’m sure you will love yours too. Following. Check out my build thread. Two suggestions if you don’t mind. Use PVC cement primer if you already aren’t. There’s clear primer if you don’t want purple showing. It provides for a much better glue job because it acts as a catalyst for the glue and enhances the chemical reaction. Second suggestion. Always put the heater’s probe in the same sump section as the heater. If your return pump fails but your heater stays on, just the sump section with the heater will be heated. The sump section with the probe will settle down to room temperature (say 68* F) and the probe in it will tell the heater to stay “on” until system target temperature (say 78* F) is reached. But all the while the stays heater is on, the water in the heater section won’t mix with the water in the probe section. Now the water in the heater section is HOT but the probe reads from the probe section which is 68* F. The probe won’t let the heater turn off. Let me know if you have any questions. ;-)