How To Clean and Protect Your Fish Finder

A lot of people say all that is required to maintain a fishfinder is by cleaning it with a towel and water. But do you know that doing this can scratch your screen because of the hard minerals of dirt from the water?

Sure, one of the best ways to maintain your fish finder to ensure it lasts you for a pretty long time is through effective cleaning. But that is not the only way. You also need to protect the SD card chip from water intrusion.

So how do you clean your fish finder effectively and also protect it from harsh conditions?

In this article, we’re going to give you easy ways to clean your fish finder without having to damage it and also some quick tips to protecting it from unfavorable elements.

How to Clean a fish finder

We have come up with two methods that you can use to clean your fish finder to get the most out of it. Please read on to know more about them.

1) Using a Micro Fiber Cloth and Lemon Cleaner:

Here’s how you can use the lemon cleaner with a cloth to clean your fish finder.

Get a Micro Fiber Cloth

First, you’d need a micro fiber cloth. It’s not advisable to use any other type of fabric to avoid causing any damage to your screen.

Get a Lemon Cleaner

The other thing you need is a lemon cleaner or a bowl of water. The reason we recommend lemon cleaner is because it contains citrus, which helps to break down the minerals on the screen.

Apart from using it to clean the fish finder, it also works perfectly well on boats too. You can use it to wipe down the gunners of your boat. All you have to do is just coat the whole screen, but not too much, and let it sit on the screen to break down the hard stuff on it.

Let it Stay for 20 seconds before Scrubbing

You want to let the cleaning agent sit in for like 20 seconds and then cover it up with your microfiber cloth and gently push it down till it wipes out all forms of dirt. You can repeat this method if you still find any dirt on the screen.

2) Using soap and cloth:

Follow this method to clean your fish finder with a cloth and a soap.

Get a Dawn Soap

The second method is to use a little dawn soap which breaks down a lot of the hard water, oil, and grease on the screen. What you want to do is to make a couple of dots of the soap on the screen. You should be careful not to move it around, so you do not scratch the lens.

Get a Paper Towel

Next, what you want to do is to take a paper towel, fold it up and lay it over the screen. Get a water dog and spray a little bit of it on the paper towel, just the outside of it and not directly on the screen. Basically, the water dog helps with water spots, and it’s a mixture of vinegar and water.

You should make sure the wet paper towel gets around all the edges of the screen by just simply tapping it down with a finger. Let the towel sit on the screen for about 30 seconds.

Pull off the paper towel. When you do this, you’d see it taking a lot of the hard water and other stuff off the screen.

Dab the screen with your Microfiber cloth

Next, you take your microfiber cloth and dab the screen with it to get the other remaining stuff off the screen without scratching it.

Spray an Electronic Cleaner

The last thing for you to do is to take a dry part of your microfiber cloth and spray an electronic cleaner on it. Use it to wipe the whole fish finder to make it perfectly clean and clear.

How to Protect a fish finder

Protecting your fish finder unit and your SD card chip from water intrusion is easy. Here are a few ways you can protect your fish finder.

1) Using Dielectric Grease:

Using dielectric grease to protect water from entering your SD card unit is very effective and simple.

Firstly, what you need to do is to put a little bit of grease right on the chip itself and smear it around the card.

The other portion for you to grease is the slot of the SD card. Put some dielectric grease on the top of the slot and snap the SD card inside.

Make sure you cover the top with the grease to avoid water from entering inside the slot even though it enters the seal. Close it up, and that’s it.

Of course, you don’t need to worry, and the dielectric grease will protect your chip and not destroy or spoil it.

2) Putting it in a Pelican Case:

Another way to protect and store your fish finder screen is by putting it in a box, especially in a Pelican case.

Pelican cases are the best type of boxes to use. You can use it to lock up the fish finder screen for a long time.

The Pelican case has a pick and pluck foam as well as a watertight seal, nice heavy-duty lashes and it’s lockable. It also has a breather valve on it.

The Pelican case comes in different sizes so whenever you want to get one, get the size that fits your device. These features are to protect your device from any damages.


Having the right fish finder is one of the most important things any angler would wish for. But maintaining it properly will not only make it to last long but will also let you get the most out of your device.

So if you want your fish finder to last you for a pretty long time without wearing out soon, then the above tips are what you should put into consideration to get the best out of your device.

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