| | Re: Big Tank. Big Lights. Need Advice.
I really thought about XP4's. However, one XP4 costs twice as much as an XP3. Two XP3's give you 50% more media room than a single XP4. I know it's more to clean, but you could do shifts of 2 every couple weeks. Plus we would have a redundant system that if one filter were to go out it wouldn't be catastrophic.
That was my train of thought anyway... maybe I'm missing something though?