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 Acoustic Guitar Humidifier Pro

D'Addario Acoustic Guitar Humidifier Pro

Product ID: 36803778

Details

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

⏳Longer refill intervals

🎸Prevents cracks & warping

💧12x water retention sponge

E£ 2258

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Description

💧 Keep your guitar flawless, stay ahead of the dry season blues!

DAMAGE DEFENSE - Protects your guitar from cracks, warped necks, and shrinkage even in the driest environments.
TRUSTED PRO GEAR - From D’Addario, the world’s leading innovator in premium musical accessories.
SEAMLESS INTEGRATION - Suspended between strings, releases moisture evenly without touching the guitar body.
EFFORTLESS MAINTENANCE - Easy to check and refill without removing the unit—no drips, no mess.
ULTIMATE MOISTURE LOCK - Specialized hydrophilic sponge holds 12x its dry weight in water for extended hydration.

The D'Addario Acoustic Guitar Humidifier Pro features a high-density hydrophilic sponge that retains 12 times its weight in water, providing long-lasting moisture release to prevent cracks, warping, and shrinkage. Designed for easy use and maintenance, it suspends safely inside the guitar soundhole, ensuring even humidity without mess. Trusted by professionals, it’s a must-have for preserving your acoustic guitar’s tone and playability in dry conditions.

Specifications

ASIN	B013WW8AUE
Best Sellers Rank	#3,632 in Musical Instruments ( See Top 100 in Musical Instruments ) #50 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 799 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 Highlight	D'Addario guitar humidifiers help maintain proper moisture, protect acoustic instruments and support stable tone.
Item Shape	Round
Item Type Name	Guitar Cleaning And Care Product
Item Weight	0.06 kg
Manufacturer	D'Addario &Co. Inc
Material	Hydrophilic Sponge
Model Name	GHP
Model Number	GHP
Number of Packs	1
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
Special Feature	Adjustable Humidity Control
UPC	019954169633
Unit Count	1 Count
Warranty Description	Replaced if defective

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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E£ 2258

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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1 week ago

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Good experience, but the tracking updates could be better.

2 months ago

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