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One deterministic finder reaches practical guidance, tank-side first decisions, bounded definitions, recurring claims, reviewed studies, supporting authorities, named uncertainty, reproducible searches and public corrections. It retrieves existing records and never generates a care answer.
Result type is part of the answer boundary. A guide gives practical direction. A glossary term standardizes wording. An evidence record describes a study. An authority governs a method or external rule. A gap states uncertainty. A search documents method. A change records history. None silently becomes another type.
14 records found
A tank is cycled after a fixed number of weeks
Supported: microbial nitrogen processing can become established in aquarium systems.
Boundary: Not established: age, nitrate, clear water or a bottled product alone does not prove that one tank can process its intended load.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
A TDS number tells you whether the minerals are right
Supported: a meter can estimate TDS from conductivity using its conversion factor.
Boundary: Not established: the display does not reveal ionic composition, separate calcium and magnesium, GH, contaminants or a species optimum.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Large water changes kill shrimp
Supported: a change can expose animals to differences in temperature, dissolved composition, pH, contaminants and gas state.
Boundary: Not established: percentage alone does not determine safety, and a tiny change is not automatically useful or harmless.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
A failed molt means the shrimp needs more calcium
Supported: mineral availability and water chemistry matter to exoskeleton biology.
Boundary: Not established: one incomplete molt identifies a calcium deficiency, proves low GH caused it or validates adding a mineral product.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Neocaridina clean the tank
Supported: Neocaridina graze algae, microbes, detrital material and food-associated surfaces.
Boundary: Not established: grazing guarantees control of a visible growth, replaces maintenance or exports the consumed nutrients from the aquarium.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Peaceful fish are shrimp-safe
Supported: outcomes depend on the exact fish species, individual size, shrimp life stage, cover, feeding, intake protection and the tank's goal.
Boundary: Not established: a retailer temperament label predicts juvenile retention or preserves a breeding line.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
A berried female guarantees babies
Supported: an ovigerous female is carrying attached eggs.
Boundary: Not established: the observation alone proves fertilization, viability, a hatch date or retained juveniles.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Every shrimp should be drip acclimated for the same amount of time
Supported: source and receiving water can differ, and the opened package can continue changing during a transfer.
Boundary: Not established: one drip rate or clock time is best for every package, water comparison and animal state.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
A tank can hold a fixed number of shrimp per gallon
Supported: density can affect outcomes under defined systems and feeding histories.
Boundary: Not established: tank volume alone reveals oxygen, grazing surface, waste-processing capacity, maintenance limit or sustainable reproduction.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Colour proves the species or purity of a line
Supported: colour and pattern are observable phenotypes that can be recorded and graded under a method.
Boundary: Not established: one photograph or trade label proves species, genotype, pedigree, relatedness, hybrid status or genetic purity.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Any copper kills shrimp or copper is safe
Supported: copper is biologically relevant and can be toxic; effects depend on concentration, chemical form, water chemistry, exposure and endpoint.
Boundary: Not established: an ingredient name alone proves a product is lethal or safe, and one acute value is not a home target.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
A fixed quarantine period proves shrimp are clean
Supported: separating each new source contact network reduces opportunities to expose established animals and creates an observation window.
Boundary: Not established: one duration detects or clears every organism, proves pathogen-free status or validates routine prophylactic treatment.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Mixed colours always turn brown or clear in two generations
Supported: mixing undocumented breeding populations can reduce consistency when selection and records stop.
Boundary: Not established: every named-line cross has one phenotype or reaches it on a universal F1 or F2 calendar.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
Warmer water always makes shrimp grow and breed better
Supported: temperature can change development, growth, sex allocation, reproductive timing and physiology under tested conditions.
Boundary: Not established: the fastest measured outcome is the best long-term welfare or colony temperature, or that one successful treatment defines a universal optimum.
Reviewed 2026-08-12. Result order is textual relevance, not quality, certainty, severity or importance.
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