How long do you soak the sponge in the planet wave gap guitar humidifier? The sponge doesn't seem to soften.

It takes about 30 mins. But put something over it to make sure it is completly submerged in water.

How much water do you add?

I squish it around under the faucet until it's completely saturated, then shake off the excess drops so it won't drip I side the guitar.

any reason not to use for a classical guitar

These are the only humidifiers I would use on my classical guitars They are good! Just make sure you wet the sponge with purified water (you can buy at every grocery store) and not sink water as the minerals will cause the sponge to mildew

Can you hang the guitar on the wall with this in it?

You could, but it wouldn't be very effective. I keep mine in a closed hard case and am able to maintain the humidity level around 50 in dry west Texas. It's dryer in winter. I have come to the conclusion that the only way I can hang, or leave my vintage acoustic guitars out on stands or hanging is in a humidity/ temperature controlled room. Until then it's in the case with one of these soundhole humidifiers.

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D'Addario Guitar Humidifier Pro - Acoustic Guitar Soundhole Humidifier with Sponge - Non Drip - Suspends from Strings - Holds 12x Weight in Water

D'Addario Guitar Humidifier Pro - Acoustic Guitar Soundhole Humidifier with Sponge - Non Drip - Suspends from Strings - Holds 12x Weight in Water

Product ID: 36803778

Details

Brand
D'Addario
Capacity
20 liters
Color
Original
Operation Mode
Manual
Special Feature
Adjustable

🎸Suspends safely from guitar strings

💧Holds 12x its weight in water

📊Maintains ideal 45-50% humidity range

€ 37.24

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Description

💧 Keep your guitar stage-ready with pro-level hydration!

LONG LASTING HYDRATION - Hydrophilic sponge holds 12x its weight in water for extended protection between refills.
TRUSTED BY PROS WORLDWIDE - D'Addario’s award-winning quality ensures your instrument stays concert-ready and flawless.
ULTIMATE MOISTURE CONTROL - Two-way humidity system keeps your guitar in perfect shape, preventing cracks and warps.
NON DRIP GUITAR SAFE DESIGN - Suspends from strings without touching wood, releasing moisture evenly without mess.
EFFORTLESS SETUP MONITORING - Simply moisten the sponge, place in soundhole, and track humidity with the included hygrometer.

The D'Addario Guitar Humidifier Pro is a compact, non-drip soundhole humidifier featuring a hydrophilic sponge that holds 12 times its weight in water. It maintains an optimal 45-50% relative humidity inside your acoustic guitar, preventing wood damage like cracks and warping. Easy to install and monitor with an included hygrometer, it suspends safely from the strings without touching the guitar body. Trusted by musicians worldwide, this reusable humidifier offers long-lasting protection to preserve your instrument’s tone and playability.

Specifications

ASIN	B013WW8AUE
Best Sellers Rank	#1,161 in Musical Instruments ( See Top 100 in Musical Instruments ) #18 in Guitar Cleaning & Care Products
Brand	D'Addario
Brand Name	D'Addario
Capacity	20 liters
Color	Original Version
Control Method	Touch
Customer Reviews	4.5 out of 5 stars 790 Reviews
Filter Type	Wick
Global Trade Identification Number	00019954169633
Included Components	[Humidifier]
Item Dimensions D x W x H	1"D x 1"W x 1"H
Item Shape	Round
Item Type Name	Guitar Cleaning And Care Product
Item Weight	0.06 Kilograms
Manufacturer	D'Addario &Co. Inc
Material	Hydrophilic Sponge
Model Name	GHP
Model Number	GHP
Operation Mode	Manual
Other Special Features of the Product	Adjustable Humidity Control
Part Number	GHP
Power Source	Corded Electric
Product Dimensions	1"D x 1"W x 1"H
Room Type	Bedroom, Living Room, Office
Runtime	1 minute
Smart Home Compatibility	Not Smart Home Compatible
Special Feature	Adjustable Humidity Control
UPC	019954169633
Unit Count	1.0 Count
Warranty Description	Replaced if defective

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€ 37.24

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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