Alright, thanks all for the assistance. I had decided to go w/ gravel over sand after reading in my reference book that:
- either would work for a marine fish-only aquarium
- sand needs to be stirred to prevent toxic buildup
And a general hope that gravel would be easier to clean than sand.
I...
I was hesitant about the water cycling product - however, I monitored the ammonia and nitrite levels carefully, and after an initial spike, they've both stayed at 0.
I just checked the pH again in the daylight - it's right at 8.1, with a nitrate reading of 10ppm.
I'm using a penn-plax cascade...
I have a reasonably new saltwater tank running; it's been up for a total of about 6 weeks. 50 gallons, with live rock an a canister filter. I used a product with live bacteria to accelerate the cycling process - it claimed to be "instant," but I still waited 2 weeks before adding fish.
2...