Best Aquarium Overflow System in 2021
Blue Ocean of 600 Overflow Box Continuous Siphon 125G Aquarium
VIV 820-10 Overflow System Glass
- easily adds an overflow to your aquarium without having to drill through the tank
- operates efficiently and quietly at 350 gallons per hour, making it ideal for a30-50 gallon aquarium
- crystal clear glass does not distract from the beauty of the aquarium as other filtration options would
- Country Of Origin: China
KollerCraft TOM RP90 Rapids Pro Filter with UV Sterilizer for Aquariums
- Advanced filtration system for larger aquariums (up to 90 gallons)
- Processes waste and impurities to keep aquarium water crystal clear and tank inhabitants healthy
- 18-watt UV (ultraviolet) sterilizer effectively removes unsightly green water and aids in removing harmful parasites
- Flow rate of 490 gallons per hour (GPH)
- Suitable for freshwater or saltwater aquariums
DIGITEN Auto Top Off System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump
- ◕‿ ◕Simple, complete, Smart Automatic Top Off System, aquarium automatic water supply system, super easy installation and maintenance. Suitable for aquariums up to 5/8"(16mm) thick, durable PC material holder to prevent move, adjustable bracket on holder make different water levels possible.
- ◕‿ ◕Precise dual float water level sensor for overfilling protection. When the water goes below the minimum water level , the power will be activated, the pump automatically works, and cut off once the water level reach to maximum. The second float ball will work when the first float ball fails.
- ◕‿ ◕Siphon break. The siphon break is optional installation part. It is recommended that the water level of display tank be higher than the reservoir, and DON’T leave the end of the water supply pipe in the water, otherwise, it will siphon after the pump shuts off, if so the siphon break must be installed at the end of the water supply pipe.
- ◕‿ ◕Plug-and-Play with all parts included. Everything you need is included, it will also come with a pump and a ETL listed power adapter. Safely keep sump water levels stable, no moving parts that can fail.
- ◕‿ ◕Suitable for all kinds of fish tanks, aquariums, sumps, etc. Suitable for aquariums up to 5/8"(16mm) thick, save you a lot of time to enjoy your life. The Smart ATO Complete Kit will never make water overflow your tank, it is especially suitable for the sump with a lot of evaporation. 12 month warranty!
Eshopps AEO11005 Overflow Boxes Pf-800 for Aquarium Tanks
- Each box includes everything required to install on your aquarium and includes; Foam prefilter, Clear U-tube syphon, nylon screw & wing nuts, black pre-filter box & 1 in. bulkhead drain.
- The Eshopps PF-800 Hang on overflow box features a compact U-Tube Design
- The PF-800 is designed for aquariums up to 125 gallons, and has a maximum flow rate of 800gph
- At only 3" wide, minimal space is required between your tank and wall, these boxes are excellent for optimizing space.
- The interior black acrylic overflow box is adjustable so you can set the water level in the aquarium where you want it, and efficiently pulls water of the surface to keep the surface clean
2 Pack 1/4" Mini Plastic Float Valve Kit for RO Water Reverse Osmosis System Water Filter Float Ball Valve for Fish Aquarium (1/4")
- Multifunction-This float valve can be used for RO system, beverage dispensing, refrigerator ice maker, aquaponic fish tank etc
- They can also be installed in containers as small 1 gallon pails, sumps, and 200 plus gallon commercial storage containers to shut off the flow of water
- It's very simple to install by drilling a small hole in the container. And it can save a lot of water from ending up on the floor
- You can achieve the accurate installation of water level, environmental protection, no rust
- Applicable pressure: 0.01- 1.2 MPA; Adapt to water temperature: 0 ℃ - 80 ℃
Eshopps PF300 Overflow Box for Aquariums, up to 75-Gallons
- Single intake
- cylinder (round) foam
- pre-filter box
- 1" bulkhead
XP Aqua Sumpless ATO - Complete Aquarium Auto-Top-Off System for Sumpless Aquariums
Eshopps AEO11015 Overflow Boxes Pf-1200 for Aquarium Tanks
- Any aquarium up to 400 gallons
- Easy to setup design
- Dual drain design in case one gets clogged
- Item Package Weight: 1.0
Eclipse S Overflow Box Small - Eshopps
- Dimensions: 6" x 3" x 6" - Black Box: 6" x 1.25" x 6"
- Tank Usage: up to 75g, 600 GPH
- Slim and Compact Design to suit any aquarium set-ups
- Template w/Drill Bit - Holesaw also included to help with installation
- Featuring up to 3 Sizes: Eclipse S, Eclipse M, and Eclipse L
Math Lesson Plan: Alternative Ways of Calculating Volume
This lesson teaches students how to calculate volume using the graduated cylinder method and the cup overflow method.
This is a lesson plan on alternative ways of calculating volume. This lesson plan should be taught after students have learned the traditional method of calculating volume, at least for rectangular solids and cubes. This lesson plan will show students there is usually more than one way to find the answer to a question.
Students should also know the names of several geometric shapes. For a lesson plan on 3d geometric shapes, go here.
Lesson Topic: Alternative Ways of Calculating Volume
Grade Level: 3
Goals, Objectives, and Standards
Instructional Goals: The goal is to help children understand the concept of volume.
Cognitive Domain: Students will learn three different ways to calculate volume.
Affective Domain: Students will learn to share with each other and how to work in groups.
Psychomotor Domain: Students will develop their psychomotor domain through the use of tools for measurement. Students will learn that there is usually more than one way of finding a solution to a problem.
Students learned briefly in yesterday's lesson how to find the volume of a cube by using the length times width times height formula. In this lesson they will learn two more ways they can find the volume of an object.
Brief Content Outline: Students will find the volume of various cubes and rectangular solids by the graduated cylinder method as well as the overflow cup method. They will then check their answers by measuring the length, width, and height of those shapes. They will also find the volume of other 3d shapes by the first two methods.
Introduction: Ask students, "Do you remember the 3d shapes we've been working with? Do you remember how we learned how to calculate volume? Well today we're going to learn how to calculate the volume in different ways."
Initiating Activity: Show students the graduated cylinder. Ask if anyone knows what it is. Now have someone come up to the front of the class, where you'll have set up a small cup, a pitcher of water, a funnel, and a graduated cylinder. Ask the student how they think we can tell how much water fits in the cup. Say, "That is called the volume. Volume can also be thought of as how much space is inside an object. Since we can't measure air...we fill the cup with water so we can measure the water." Have the student fill the cup with water. Ensure that the cup is full, then have the student put the funnel in the cylinder and pour the water from the cup into the graduated cylinder. Ask if anyone knows why we had to use a funnel. (Because we're pouring water from a big cup into a smaller space; the funnel ensures that no water spills.) Have another student come up to read the measurement. Have them give their answer, then show the class how, when reading a graduated cylinder, the water line isn't straight, it's curved. Tell students: "In this case, we read the number from the bottom of the curved water line, which is known as the 'meniscus'." Record the number shown and explain that this number represents the cup's volume.
Lesson Development: Pass out the same materials to each group of students (about 3-4 students in a group). Instead of a cup, however, give each student a cube or rectangular solid that has one of its faces removed (so they can fill it with water).
Ask students to find the volume of their shape by the method you just showed them at the beginning of class.
After each group has found the volume and written it down, pass out rulers. Have them measure the length, width, and height of their shape. Finally, tell them to find out the volume of their shape by multiplying the length, width, and height. Now ask them to compare the two results they've gotten.
Now tell them we are going to learn one more way to find the volume. Pass out 3d shapes to each group, such as pyramids, spheres, and cylinders. Pass out "overflow cups"...cups that have a spout near the top so displaced water can drip out.
Have students fill the cup with water. Have them hold their graduated cylinder next to the spout to catch the displaced water. Then ask them to slowly lower their shape into the water, carefully letting go of the shape at the end so that their fingers don't touch the water. Ask if anyone knows why letting their fingers go inside the water would skew the results. Have them record their answers.
Conclusion: Ask students which way they liked best for calculating the volume.
Students' assignment is to go home and use an overflow cup and graduated cylinder to measure the volume of 2 objects in their house. Have them choose one object, any shape, any size (as long as it fits inside the overflow cup) and measure its volume using the overflow method. Then have them choose a cup or any object that can be filled with water. Have them fill it with water and measure the volume by pouring the water into the graduated cylinder.
Materials and Equipment
A small plastic cup, and enough of each of the following items so each group has one: Funnels, graduated cylinders, pitchers of water, overflow cups, rulers, cubes and rectangular solids, and various 3d shapes.
Assess students' understanding by observing their interactions with their group as they do group work, as well as their participation in class, and finally by checking their take-home assignment.