If near surface solar near a thermal vent go thermal or just put a multi room on and put bioreactor in it

I put a solar panel on it. I don't have the blueprints for multiple purpose room

Place a solar panel on the roof until you can get another source of power.

I agree with Orgin and Frost, I'd put a solar panel

I put a bioreactor and have storage for fish.

XD

So now suddenly you have a multipurpose room.

You don't start building a base without it - that's ludicrous.

I put reinforcement on every wall

Bioreactor in multi, with plant pots inside and exterior grow beds, takes you 14 titanium, 2 silver, 1 quartz, and 1 lubricant

I built a tunnel leading from the base to a single compartment above the surface of the water, and covered it with solar panels