The Oase HeatUp is a precise, reliable submersible aquarium heater — German-engineered for accurate, uniform temperature control. Its temperature scale adjusts across roughly 66–90°F with a fine secondary control for dialing in the exact setting, keeping your tropical fish, shrimp, and plants in the stable warmth they need. It can also be integrated directly into Oase BioPlus filters for an even cleaner setup.
Good to Know: Stable temperature is one of the foundations of fish health — swings stress fish and invite illness — and a quality heater with accurate control is worth it. Available in 25, 50, 100, 150, 200, 300, and 400 watt versions; as a rough guide, aim for about 3–5 watts per gallon, sizing up in cooler rooms. Pair it with a thermometer to confirm the real tank temperature.
How to Use: Submerge it (per the fill line), let it equilibrate before powering on, and set your target temperature. Place it in good flow — near a filter outlet — for even heat distribution.
Inventory Accuracy
If this item is at low stock, or you are ordering all or almost all of our current inventory, there may be an inventory discrepency. We will contact you about any issues as soon as possible.
Order Processing
Please allow 24 to
48 hrs to process your order. Expect an
email within 48 hrs to let you know your order is on your way.
Store Pickup
If you choose “Pickup
in Store” at checkout, an email will be sent when your order is ready for
pickup. Orders can be picked up during
store hours, see our home page for our current hours. The pick up address is 6637 Easton Rd,
Pipersville, PA 18947
Domestic Shipping Rates
Shipping charges, if
any, for your order will be calculated and displayed at checkout.
