CAC Study Guide 2026
Everything you need to pass the CAC exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CAC Exam Format at a Glance
📚 CAC Topics to Study (17)
✍️ Sample CAC Questions & Answers
1. What is a 'disappearing stream' in aquascape terminology?
A disappearing stream is designed so the water collects in a gravel-filled underground basin at the stream's end, creating the illusion that the stream vanishes.
2. Which factor most directly determines the pump size needed for a waterfall and stream feature?
Pump sizing is determined by calculating the desired flow rate (typically 100–150 GPH per inch of waterfall width) multiplied against the total head height.
3. When sizing a stream for a residential aquascape, what is the general rule for stream width relative to waterfall width?
Keeping stream width similar to or slightly narrower than the waterfall maintains consistent visual proportion and efficient water flow throughout the feature.
4. When excavating a stream bed, what slope is generally recommended per linear foot to ensure consistent water movement?
A slope of approximately 1/2 inch per linear foot provides enough gradient for natural-looking water movement without causing excessive velocity.
5. What is the best strategy for handling a client complaint about a pond feature not performing as described?
Promptly inspecting the issue and providing a written resolution plan demonstrates professionalism and preserves the client relationship while protecting the contractor legally.
6. What is the recommended frequency for reviewing and updating water quality and filtration systems protocols?
Monitoring outcomes through regular data collection and trend analysis is the correct approach because effective water quality and filtration systems in the aquascape contractor field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.