Mesocosms need upkeep as much as any other equipment.

Today, a handful of divers and volunteers made their way down to the pier in the sweltering heat to scrub the walls of the mesocosms clean from the inside and out.

For all mesocosms to receive the same amount of light, they need to be freed from their “natural curtains” of organic growth.

Each tube received a special treatment of hands-on scrubbing with slim brushes on outsized broom sticks, diligently run up and down its thin walls by the students.

Underneath the water surface, three divers whisked circles around the outside walls with a scrubbing brush in hand.

We take good care of our mesocosms so that they take good care of our experiment!

Author: Fine Brendtner