Originally Posted by comando489
Tell me what you think!
Once again you are "doing very good"! and thanks for reviewing the posts in detail as I have said earlier "it takes more than a minute or two to put these together and edit them!".
The only thing which I can recommend with respect to the slate is:
1) slate is a metamorphic rock and is composed of clay minerals which "in the terms which I understand have been subjected to extreme pressure and heat".
2) if it were me I would put the slate in your 10G tank (or another convenient vessel) and add "like 5 times the quantity of dechlorinate recommended for 10 gallons or the volume of the vessel".
3) "swish" them around every 8 hours or so for a day and add another "5 times the recommended quantity of dechlorinate".
4) "swish" them around every 8 hours of so for another day before putting them in you tank.
The above may be "way overkill" but "in my brain" you did very good in cleaning them with bleach but it is "just not worth" having "a bunch of" dead fish because of free chlorine existing in what "should be" metamorphic rock.