Plants and decorations can change the look of an aquarium, but the best arrangement should make sense for the fish, water conditions and space in the tank. You can choose artificial greenery, suitable live aquatic plants or a combination. The important thing is to check fit, maintenance and any risks from sharp or loose parts.
Artificial plants: easy to position
An artificial aquarium plant can create a green accent without needing a live-plant growing routine. Compare the available heights with the actual depth of your tank. Leave sufficient swimming space and make sure the plant does not interfere with filters or heaters.
Inspect plastic leaves, stems and bases before use. Avoid decorations with rough edges that might snag fins. Rinse and clean aquarium accessories appropriately, without ordinary household cleaning chemicals.
Live plants: check what the species needs
Living aquatic plants have their own requirements for light, water conditions and maintenance. Choose varieties that suit your tank and its fish or other inhabitants, rather than buying only for their appearance. A local aquatic specialist can help with species compatibility.
When a wall-mounted plant cup might help
An acrylic aquarium plant holder with a suction cup can create a planting spot on a smooth tank wall. It may be useful when you want to keep a plant in a particular location. Check the selected design photo, dimensions and suction-cup fit before ordering, and avoid placing a cup where it could loosen and fall onto animals or equipment.
Choosing a suction-cup aquarium plant holder
Measure the planting space before choosing a cup. Our acrylic aquarium plant holder with suction cups comes in three designs. The measurements below are approximate dimensions, so allow room around the holder as well as space for your plant.
| Design | Width × height | Mounting |
|---|---|---|
| Small Rounded Cup | 3.8 × 4 cm | One suction cup |
| Round Pot | 5 × 3 cm | One suction cup |
| Large Rounded Cup | 6 × 5 cm | Two suction cups; mounting section approximately 7 cm high |
The Round Pot is wider but shallower than the Small Rounded Cup. Choose by both measurements, rather than assuming that the wider design also gives more depth. Each option contains one holder; plants are not included.
These holders attach to a suitable smooth tank wall with suction cups. If you need a holder that hooks over the rim, this mounting design is different. Keep access for cleaning, check the suction cups regularly and make sure the selected plant suits your aquarium conditions.
Watch the aquarium as a whole
The RSPCA's fish tank guidance notes that clear water does not guarantee healthy water. Good filtration and appropriate testing remain essential, regardless of whether you use live plants or plastic decorations.
Simple checks before adding anything
- Make sure the accessory is suitable for aquarium use.
- Check measurements against the space available.
- Inspect for rough or sharp edges and insecure attachments.
- Leave plenty of swimming room and clear access for cleaning.
- Check on the decoration after installation to ensure it remains secure.
Browse our fish and aquarium accessories and practical aquarium accessory guide.