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hydor Hydor Theo 300W Submersible Heater
Italian-built glass heater, well-priced reliable workhorse. Pair with external controller (Inkbird) per safety constraint C7 for 300W class.
Specifications
- watts
- 300
- adjustable
- yes
- suitable for gallons
- 60-100
- titanium
- no
Sources
- Manufacturer spec sheets (Fluval, Eheim, Seachem, Hygger, NICREW, Inkbird, Hagen, Aqueon, Waterbox, Innovative Marine, Red Sea, UNS, Cobalt, Finnex, Hydor, Twinstar, Kessil, AI, CO2Art, GLA, Aquatek, ADA, CaribSea, Reef Octopus, Bubble Magus, Eshopps, Sicce, Ecotech Marine, AquaTop, API, Salifert, Hanna) · ingest 2026-05-06
- Practical Fishkeeping public articles · ingest 2026-05-06