So after removing all fish and only leaving sexy shrimp for a month or 2 my pod pop spiked. Just covering the glass sand and rock. So I ordered a bonded pair of Yasha gobies from divers den. I put them in around lunch time yesterday and they won't leave this hole there both crammed in. I killed the pumps this morning and spot fed near the whole with no effect. Any ideas how to ensure they will survive?