Time for a little update.
I must have missed a couple posts during the rebuild. After some more time under the microscope, I do believe the bacterial mats are actually dinoflagellates. There were a couple links in the deleted thread identifying similar species using web references, oh well. I tried increasing pH to the 8.4-8.5 number for several months during the winter but even with alk at 11, pH was still only 8.3-8.4 due to ambient co2.
I’m still experimenting with the dino. For some time I’ve been taking the rocks out and scrubbing them with a tooth brush under tap water. It still leaves the dino in the rock but it gets rid of all the fuzzies. Usually takes a month or two for the rocks to be fuzzy again. I recently took a couple rocks and cooked then in vinegar. WOW, I was surprised how imbedded into the pores of the rock the dino went. It took a full cook removing all organics to rid them of dino. Two weeks later and the dino is already recolonizing the rocks. Tenacious stuff!
I’ll wait for warm temps so I can air out the co2 from the room, re-cook a couple rocks, then elevate pH for the summer and see what happens.