When I checked the tank this morning, the water wasn't completely clear. It dawned on me that, based on my handling of the very fine sand, that perhaps this was not the best sand to use. It packed together too tightly and how would the baby horseshoe crabs dig in it? So - I went to the local aquarium store, got coarser sand, removed the fine sand from the tank (thank you WW spoons, you were perfect for the job), checked the salinity, added the new sand (which was dry), cleaned the foam filter in 10 ppt water that was treated for chlorides (the foam was loaded with silt), and hooked up the filter again. It is bubbling away with the eggs still in the bucket, awaiting transfer when things settle down and I add the Biospira. Whew! I think this was worth doing but it has been a fair bit of work.
(3 hours: finding coarser sand, cleaning out the aquarium, testing water)
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