Also had minor catastrophe this morning, finally figured out where all my water has slowly been disappearing to lol, my HW labs SR2 multiport bottom two ports which I tightened by hand iirc were leaking, last night it went from very slight leak to enough for half cup or so lost in 6-8 hours 😆
Was freaking out when I saw res was down half water(optimus 5.75 inch system aka baby res)
Noticed it when I woke up to the pump sucking air throughout loop due to low water level and full pump power