Each mesocosm is equipped with three to eight internal titanium heating elements (600 W, Schego).

Cooling is achieved by commercially available electrical titanium heat exchangers (Titan 2200, Aqua Medic).

Heating and cooling elements are automatically regulated by the aquarium controllers with a hysteresis of 0.1-0.2 °C (GHL ProfiLux 4(e); Aqua Medic T controller twin (PRO)).

Circulation pumps (EHEIM 56.7 L/m  / Tunze TURBELE STREAM 6085) provide water currents and equally, distribute heat inside the mesocosms.

Temperature, salinity, pH, O2, and light are monitored by HOBO loggers (HOBO Pendant Light/Temperature Data Logger, Onset Computer Corporation), as well as with portable reference systems (hand-held probe MULTI 3630 IDS, with sensors: SenTix 940, FDO 925, TetraCon 925, WTW Germany; Li-Cor model Li-1400 data logger). Chl a is measured using an Aquafluor Handheld Fluorometer. Samples for porewater and water-column nutrients are taken through syringes, including Rhizon Samplers (Rhizosphere Research Products).