The golden rule: the frogs stay in
An African dwarf frog spends its whole life underwater, breathes air at the surface, and has skin thin enough to tear on a rough net. Taking frogs out for cleaning is the single most stressful and risky part of old-fashioned tank care, so the modern method works entirely around them. They are also nearly blind and navigate by vibration and smell, which means a hand plunging in reads as a predator arriving. Everything that follows serves one aim: the tank gets clean while the frogs experience nothing more alarming than a slow-moving tube and a gentle change in current. If a frog absolutely must be moved — a tank repair, say — scoop it in a soft container underwater and keep it submerged throughout.
Slow siphoning and surface work
Start the siphon away from the frogs and move the tube at a crawl, hovering it over the gravel where waste and uneaten food settle. These frogs are bottom-dwellers that rest on the substrate, so watch for one sitting motionless in your path — they often will not move, trusting their camouflage, and it is your job to route around them. Pinch the hose to soften the pull near plants and the frogs' favourite hide. Wipe algae from the glass with a plain soft pad in the same unhurried strokes, and use a baster to lift individual bits of debris from between plant leaves. Keep the lid off for the shortest time you can, because a startled dwarf frog can bolt upwards and out.
Water changes matched, partial and poured gently
Replace only a portion of the water — around a quarter — so temperature and chemistry shift gradually. The new water must be treated with a dechlorinator and brought to the tank's temperature before it goes in; a jug standing beside the tank for the day gets most of the way there. Pour it in slowly over your hand, a plant or the filter outflow so it does not arrive as a waterfall, and never top up evaporation losses with a big pour of straight untreated tap water. Rinse any filter media in the bucket of water you siphoned out, not under the tap. Feed lightly or not at all just before a clean, since uneaten food is most of what you are siphoning.
Calm habits that carry across weeks
Short, predictable sessions stress these frogs far less than occasional epics: a ten-minute weekly round of siphon, wipe and partial change keeps the tank in a state where nothing drastic is ever needed. Work at the same time of day, avoid tapping the glass, and dim sudden movements in front of the tank while you work. Watch the frogs afterwards — normal behaviour is drifting down to the bottom to rest and rising calmly for air; frantic darting or a frog floating listlessly at the surface after cleaning means something in the session was too much, usually a temperature swing or too large a change. Recording the routine in KinsLe's Care Teams, with the stay-in rule written into the duty, protects the frogs from a helper whose instinct is to empty the tank into a bucket.