Water type
Freshwater + Marine
Bioscape Easy Start Gravel Cleaner Large 25cm x 5cm
A 25cm easy-start gravel siphon sized for medium to large aquariums. This Bioscape gravel cleaner uses a rigid 25cm intake tube and a 5cm diameter opening to clear waste from coarser substrate without any mouth-priming — dunk the tube, pump it a few times, and the flexible hose carries the siphon to your bucket.
Key features
- Easy-start siphon — no suction-starting by mouth; a few strokes with the tube submerged gets the flow going.
- 5cm intake diameter — wide enough to clear coarse gravel and heavier waste quickly without repeated passes.
- 25cm rigid tube — reaches comfortably into medium-depth substrate on medium to large tanks.
- Bucket clip included — holds the hose in place over the bucket rim for hands-free water changes.
- Freshwater and marine safe — no adaptation needed for either water type.
Specifications
| SKU | BIS603 |
|---|---|
| Barcode | 9327975059521 |
| Tube length | 25cm |
| Tube diameter | 5cm |
| Components | Rigid intake tube, flexible siphon hose, bucket clip |
| Water type | Freshwater and marine |
Will it fit my tank?
The 25cm tube suits medium to large tanks with a reasonable substrate depth — measure from your waterline down to the substrate and make sure you can work the tube without submerging your hand. For deeper tanks, Bioscape's XLarge (38cm) reaches further; for smaller or shallower tanks, the Mini through Medium sizes are a better match.
Suitable for, and not suitable for
- Suitable for: routine gravel and coarse-substrate cleaning in freshwater and marine aquariums during water changes.
- Not suitable for: fine sand substrates with shrimp or fry present — the wide 5cm intake will lift light sand and small livestock along with debris unless you slow the flow and keep clear of animals.
Care and maintenance
Use for routine water changes — Bioscape recommends replacing 25–30% of tank water every two to four weeks. Rinse the tube and hose after each use and let them dry fully before storing.
Warranty and delivery
Covered by your consumer guarantee rights under Australian Consumer Law against manufacturing faults. Ships as a bulky item, which may add delivery costs at checkout.
Common questions
Do I need to start the siphon by mouth?
No — a few up-and-down strokes of the submerged tube starts the flow.
Will this size work on a nano tank?
It can, but a 25cm tube with a 5cm intake is built for medium to large tanks — Bioscape's Mini or Small sizes are a closer match for nano setups.
Is it safe with shrimp or fry?
Take care. Reduce flow and keep the intake away from animals, since the wide opening can draw in small livestock along with waste.



