A mature planted tank feeds its shrimp before you do. The staple diet grows on the surfaces themselves: algae and biofilm coat leaves, wood, and glass, and soft decaying plant matter is grazed down over days, so the colony feeds steadily through the day. Baby shrimp in particular survive on that film during their first days when they are too small to travel to a feeding dish. Dedicated food plays a smaller role than many keepers expect: a small supplement a few times a week suits a modest colony in a tank like this. Feeding heavily on top of free grazing mostly feeds the water instead, clouding it and inviting a snail or algae problem.
What Grazing Actually Provides
Biofilm is a living layer of microorganisms, algae, and soft decaying plant material, and it renews itself on lit surfaces as fast as a modest colony can crop it. That is why a planted tank with driftwood, leaf litter, and established plants raises shrimp so well: the food is everywhere, available at all hours, and perfectly sized for small mouths. Algae on the glass and on slow-growing leaves is part of the same pantry, which is one reason experienced shrimp keepers leave a pane or two unscraped. Decaying plant matter, such as a softening leaf, is grazed down over days by the whole colony. A tank that is scrubbed spotless and kept bare removes the staple and forces shrimp to depend entirely on food you add, which is a poorer and riskier arrangement for them.
The Supplement, Kept Small
Think of dedicated food as a top-up for nutrition the grazing may miss, not as the meal itself. Offer a small amount a few times a week for a modest colony, placing it in the same shallow dish or cleared patch so you can see exactly how much was eaten and remove the rest cleanly. A larger colony, or a tank with many babies growing at once, may justify the supplement slightly more often, judged by how completely each offering is finished. The portion rule is simple and strict: anything left after a couple of hours comes out, lifted with a small siphon or a pair of tongs, because decaying food in a shrimp tank fouls the water quietly and shrimp are sensitive to the ammonia that follows. If every offering vanishes long before that point and the colony is growing, the amount is about right; if food regularly remains, cut the portion before you cut the frequency.
Sharing Tank Duty Without Double Feeding
Shrimp are easily overfed when two people help on the same day, each assuming the other has not fed them. In KinsLe, its Care Teams assignments give the supplement feeds to a named person on set days, and that person logs what was offered and whether leftovers were removed after a couple of hours, so the next helper sees the shrimp were already fed. The shared log also keeps water changes, leaf additions, and population observations in one place, which matters because a colony grows quietly and a keeper can miss how many mouths the tank now holds. Review the notes monthly and adjust the supplement to the colony you have rather than the colony you bought. The Care Teams log in KinsLe shows who offered food, how much was eaten, and who removed the leftovers.