Have a 1 month old Red Sea Max 250 tank (65 gal
). Have about 30lb Fiji live rock. Bought some reef cleaning crew with banded shrimp, turbo snails, hermit crabs, and a sea urchin.
Tank looks great. Lighting is great.
Someone suggested I put seaweed strip in tank to be sure urchin is fed. Since I started doing that (about 2-3x/wk), the pH dropped to 8.0. Not sure if this is related or just part of the tank cycling. All other levels are perfect. Never had a bump in ammonia, or nitrites. Nitrates are zero. I change the water 10% every other week so far.
Should I react to this pH drop, or wait it out a bit longer? Is it related to the cleaning crew or seaweed?