RS Reefer 525xl return pump upgrade


New member
Hi. I just noticed my return pump has been making a lot of noise recently. Ive decided to upgrade the return pump. I've decided to go with the varios. I am wondering if anyone has any advice on which Varios I should use for the Red Sea Reefer 525xl. Varios-8 or Varios-6? Would the 6 be enough for a good turn over? Thanks in advance for any suggestions or insight.