Mystikal said:

I'd say more fresh air exchange could be beneficial. I had my lids flipped and slid back creating a big gap while fruiting last flush and it turned out great.

I'm a noob too though.
Welcome to the shroomery.

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Kloakk said:

The coir will get lighter in color as it dries out, it looks fine from here though. After looking at the tub the air exchange should be fine for colonization, but it will take a little longer and you would need to increase some when it's fully colonized I believe.

So 65°F and restricted air exchange will slow things down, but shouldn't stall it completely, take a picture every day so you can compare them and determend if it is truly stalled or just slow. If you take off the lid once a day for a picture you'll also change the air, winwin

You could do as Mystikal recommend, just watch the coir and surface so it doesn't dry out.

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