The MP40 fishguard is a great product that replaces an ecotech MP40 cover. The smaller holes in the design protect small fish and inverts from a fatal injury from the propeller which helps prevent pollution from dead animals. 
 
The design is to mimic the original ecotech cover to keep the elegance of its design and has a feature to be twisted off so the original case is accessable as well without having to remove the entire wet side body. The design also has a threaded top which allows for 3 interchangable tops that create either a swirl effect, a directional effect and a wide flow effect.
 
This set includes:
 
1 x Main replacement guard with threaded top
1 x Swirl top
1 x Directional top
1 x Wide angle top 
 
You can also pick the option of buying the Vortec pump and this cover comes half price with the purchase!
 
 
MP40 specs
 
In a reef aquarium, having the perfect amount of flow and water movement is crucial to the health of your animals, as well as the overall success of the tank.  With the addition of Ecotech Marine's Mobius app compatibility, Vortech QuietDrive pumps have never been more versatile or easier to use.  VorTech pumps are designed by aquarists to be the standard in wave-making technology. 

Features
Mobius App Ready - No need for additional equipment to get wireless programming functionality. Connect directly to your iOS or Android device.
Create massive water movement - Adjustable flow rates with included controller allow you to dial in a setting that is tailored to your aquarium
No hot spots - With its broad flow pattern, the VorTech QuietDrive eliminates "flow hot spots"
Three-dimensional flow - A unique patented design is unrivaled in creating three-dimensional flow conditions and gyres
Comprehensive flow modes - 12 different flow modes allow you to choose the best setting for happy corals and fish
Ultra low-profile design - With its patented design, the VorTech QuietDrive is the least visually obtrusive pump on the market
Safe - No electrical components in the aquarium greatly reduces the risk of electrical shock to you or your animals. 
Multiple Flow Modes
Lagoon Mode - Simulating a low-energy lagoon. The QuietDrive motor slowly changes, recreating the gentle currents of a lagoon environment.

Reef Crest Mode - Simulating currents found around high energy reefs. The pump changes speed frequently emulating crashing waves and tidal surges.This is a great mode for SPS corals.

Gyre Mode - Uniform circular flow creates motions that help transports water from one side of the tank to the other. With two pumps paired in Gyre Mode, you can oscillate between a clockwise and counterclockwise gyre that lasts from 2 seconds to 2 hours.

Short Pulse Mode - Strong short pulses that can be set at intervals of 0.2 seconds up to 2 seconds. This mode can create a standing wave in your tank with the correct frequency.

Tidal Swell Mode - A harmonic balance of the ever changing conditions found in the ocean. TSM will vary from calm flow all the way up to chaotic high flow and it even has a pre-programmed detritus cleaning surge that will help suspend particles to be swept into the filtration system.

Nutrient Transport Mode - NTM is programmed to create a two-phase circulation flow mode. Phase one consists of wave motions to help stir up and suspend detritus while the second phase incorporates surging motions to help push particles towards the overflow and down into the filter system. This is our favorite mode and is especially great for sensitive corals like LPS and SPS.
Function Modes
Feed Mode - Pause all of your wireless Ecotech Pumps at the push of a button. Pumps will turn down to an idle speed allowing you to feed your tank without the food being pushing into rocks or into the filtration system.

Night Mode - Simulate a calmer environment for night time hours. Night Mode can be enabled or disabled with custom hours programmed to automatically turn on and off.

Wave Auto Tune Mode - Create a standing wave in your aquarium to help sweep detritus and other foreign particles from the sandbed. It is amazing what will magically float out of the rocks when a standing wave is created. We highly suggest pairing two wireless pumps for this mode to get the full effect!

Mobius Programming - Access and program your Vortech pumps through your mobile device to access a myriad of features. A defining characteristic of EcoTech equipment is the versatility and power of control offered to the aquarium hobbyist. The Mobius app is packaging all this capability in a way that makes programming and control intuitive, quick, and painless.

What’s Included?
1x VorTech MP40 Mobius Ready QuietDrive Pump
1x QuietDrive driver/controller
1x Spacer
1x Foam Guard
1x Mounting hardware kit
1x Power supply
Specification


Flow: 4,500+ gph (17,000+ lph)
Power Consumption: 9 to 38 Watts
Tank Range: 50-500+ gal (190-1,800 liters)
Max Glass Thickness: 0.75 inches (19 mm