wsboyette
Fisherman
Just mixed up a barrel of seawater using RO water and some ancient years-old seawater mix, and when I pumped it into the tank, it was extremely cloudy, even murky. The bag of mix (Reef Crystals) was about 15 years old, but I had quizzed the mfr on this and they replied it should be OK as long as moisture hadn't caused it to form clods in the bag. Though there were no clods in the mix, it felt moist despite the fact that the bag had never been opened. Been some years since I last maintained an aquarium, but I do not recall newly mixed seawater being so unclear - isn't it usually very clear ?