Harvesting does not need to be complicated
Your spirulina is ready. You have an aquarium of deep green culture and you want to make deep green smoothy. The question is how to get the algae out of the culture media without making a mess or buying expensive equipment.
This is the answer. A single sheet of food-grade 44-micron mesh, 500mm square, that does one job perfectly: it catches spirulina filaments while letting the nutrient media drain straight back into your tank. No pumps. No vacuum filters. No fancy gadgets. Just a mesh, a bucket, and a few minutes work.
What you get
- 500 × 500mm food-grade harvest mesh — 44-micron pore size, the sweet spot for spirulina. Fine enough to catch the filaments. Open enough that it does not clog under its own weight
- How-to-harvest video link — step-by-step demonstration of the bucket method, sent with your order confirmation
- Express shipping Australia-wide — included in the price. No extra postage
Why 44 micron
Spirulina filaments are roughly 30–50 microns in diameter. A mesh much finer than 44 microns traps water and creates a sludge that refuses to drain. A mesh much coarser lets filaments slip through. 44 microns is the working compromise used by small-scale growers worldwide — it catches the biomass and releases the liquid.
The mesh is synthetic monofilament, non-reactive, and easy to clean. Rinse it with fresh water after each harvest, hang it to dry, and it is ready for next time. With normal care it lasts for years.
How to use it
Tie the mesh across the top of a clean bucket. Pour your culture onto the mesh. The media drains through; the spirulina stays on top. Agitate gently with a spoon to break up clumps and speed drainage. Scrape the harvested spirulina into a container. Return the drained media to your tank. The whole process takes two to five minutes.
The video link included with your order shows exactly how —using the bucket technique.
Why this beats improvised solutions
Some growers try to harvest with stockings, T-shirts, or kitchen sieves. They don’t work because they let too much biomass through. The 44-micron mesh is calibrated for the job. It is the difference between a smooth weekly routine and a frustrating mess.
“I was using a pillowcase before I found this”
“I had read online that you could harvest spirulina with a stocking or a piece of old curtain. I tried both. The stocking stretched and let half the culture through. The curtain was too coarse and the spirulina just sat in the water on top. This mesh was a revelation — the media drains fast, the biomass catches cleanly, and I can rinse it and reuse it indefinitely. For thirty-two dollars including postage it removed the biggest friction point in my whole growing routine.”
— Jennifer L., Sydney
Frequently Asked Questions
How many harvests will this last?
With normal care — rinsing after each use and drying before storage — years. The mesh is robust monofilament, not a disposable fabric.
Can I use it for other algae?
The 44-micron size is specifically calibrated for spirulina filaments. It may work for other microalgae of similar size, but we do not test for or guarantee performance with other species.
How do I clean it?
Rinse under a tap with fresh water immediately after harvesting. Hang to dry. If biofilm builds up over time, soak in dilute white vinegar for ten minutes, then rinse again.
Do I need any other equipment?
Just a clean bucket and a spoon. The video demonstrates the full technique.
What is the mesh made of?
Synthetic monofilament polyester. Food-grade, non-reactive, and resistant to the alkaline pH of spirulina culture.
Why is the colour not always the same?
We source the same specification mesh from the available supply. Colour varies between white, cream, and light grey depending on the batch. The performance is identical.
Remove the friction from harvesting
Add to cart now. The mesh is shipped from Perth, video link included, and you will never improvise a harvest again.
