hey all, I recently purchased a hydrofarm heat mat thermostat for my HTG supply float and grow seed kit. My question to everyone is, that is doesnt seem like my heat mat is heating up. On the directions it says to put 1" - 1 1/2 " near growth. From the videos i've been watching, it says to submerge the probe into the water. On the directions it specifially says not to. Does anyone use this or similar type and submerge their probe? Anyone have a similiar system they can help me with? I see no humidity in my dome and my heat mat seems like it isnt heating up to its full potential. PLEASE HELP. Also, on the video it says to leave the mat at around 75 degrees for marijuana seedlings. Is this correct? If not, what temp does everyone usually use?