The goal is a gentle surface clean, not deep digging
Vacuuming gravel in a cherry shrimp tank works when you treat the siphon as the biggest threat in the room and slow everything down. Adult cherry shrimp scatter from vibration and current, while shrimplets are nearly transparent, cling to debris, and can be siphoned up without you ever seeing them go. A deep, vigorous gravel clean of the sort used for large fish will empty a shrimp colony of its youngest generation and churn up waste faster than the filter can clear it.
Shrimp tanks also need their gravel less clean than fish tanks do. Cherry shrimp graze the biofilm and fine debris that collect between grains, so a polished, debris-free floor removes food and shelter along with waste. The target is removing settled mulm and leftover food from the surface layers while leaving the colony, its grazing film, and most of its hiding texture undisturbed.
Set up a shrimp-safe siphon before you start
For a cherry shrimp tank, preparation prevents almost every accident. Stretch fine mesh or a piece of clean stocking over the siphon intake and secure it, or use a small-diameter tube whose suction stays weak, and place a light-colored bucket below so anything siphoned shows up clearly against it. Switch off filtration and any circulation pump, because a wandering shrimp pulled toward a running intake during the distraction of cleaning is a common loss.
Start the session at feeding time if you can. A small pinch of food placed on a dish or clear patch draws much of the colony to one known spot, away from the section you plan to clean first. Check plants, moss portions, or decor you intend to lift out over a tray of tank water, since cherry shrimp of all sizes ride out hidden in greenery and get discarded with trimmings more often than with siphons.
Work in sections, hovering rather than plunging
In a cherry shrimp tank, hover the guarded tube just above the gravel and let loose debris lift into it, instead of plunging the tube deep and clouding the whole floor. Move in a slow grid across one quarter or third of the tank, stopping the flow with a thumb whenever a shrimp walks into the path, and wait for it to wander off rather than waving the tube to shoo it — sudden movement panics the colony into the very current you are controlling.
Leave the remaining sections for the next session. Rotating areas keeps biofilm available everywhere, avoids a sudden change in water chemistry from one huge clean, and shortens each disturbance for animals that feed nearly around the clock. Let the waste bucket settle, then shine a light across it and scan slowly for movement — shrimplets appear as tiny pale commas drifting or flicking against the bucket's side. Net or pipette any survivors back into the tank before the bucket goes anywhere near a drain. This two-minute habit recovers more young shrimp than any equipment choice.
Afterwards, restart filtration, confirm the intake sponge is back in place, and replace removed water gradually with matched water dripped or poured slowly, because cherry shrimp react badly to sudden shifts even when the new water is cleaner than the old.
A section map keeps every clean small
Rotating gravel sections only works if everyone knows which quarter was done last, and shrimp tanks often have several admirers with good intentions. Recording the rotation — section cleaned, bucket checked, water replaced slowly — turns a risky chore into a predictable rhythm the colony barely notices. KinsLe fits that rhythm through Care Teams, where each vacuuming session can be assigned to one person and logged complete with a timestamp, so sections rotate properly and no area gets a second deep clean in the same week.