Here are some simple and inexpensive items you can give.
- A new or used aquarium of most any size can be turned into a quarantine tank, sump, or refugium.
- A 10 or 20 gallon complete boxed aquarium kit makes an ideal quarantine tank set up. Most 10 gallon kits do not come with a heater, so you may want to include on.
- Replacement items such as light bulbs, filter cartridges, pads, floss, carbon or other filtration materials, fish foods, and medications.
- Test kits, and reagent test kit refills.
- Calcium, strontium, iodine/iodide, other reef tank additives and supplements.
- A box or bag of aquarium sea salt mix.
- A heater, thermometer, hydrometer (salinity tester), air stones and other such items can be stored as spare equipment to be used when these things break or wear out.
- An algae scrapper or magnet, siphoning tool, and any other types of aquarium cleaning or maintenance care items.
- A powerhead, or an air pump, piece of hose and bubble wand or air stone for someone who likes bubbles in their aquarium.
- A power strip with timing capabilities.
- An emergency power supply UPS.
Here are some of the more involved and costly items you can give, and ones that are best discussed with the aquarium owner.
- A piece of equipment like a filter, protein skimmer, RO/DI water filter, as well as automated items like a fish feeder, doser/water-top off unit, wavemaker, and electronic controller devices.
- An additional light strip, or a complete lighting system upgrade.

