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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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

₹ 2370

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Description

💧 Keep your guitar flawless, play flawless.

DAMAGE DEFENSE - Guards your guitar against cracks, warped necks, and shrinkage in the driest environments.
SEAMLESS INTEGRATION - Suspended inside the soundhole, releases moisture evenly without touching the guitar body.
EFFORTLESS MONITORING - Transparent stopper lets you check sponge status without removal—no guesswork, no mess.
TRUSTED CRAFTSMANSHIP - From D’Addario, the world’s leading innovator in premium musical accessories.
ULTIMATE MOISTURE LOCK - Specialized hydrophilic sponge holds 12x its dry weight in water for extended protection.

The D'Addario Acoustic Guitar Humidifier Pro uses a high-capacity hydrophilic sponge to maintain optimal humidity inside your guitar, preventing damage like cracks and warping. Designed for easy use and long-lasting moisture release, it ensures your instrument stays in peak condition even in dry climates, backed by D’Addario’s trusted expertise in musical accessories.

Specifications

ASIN	B013WW8AUE
Best Sellers Rank	#1,436 in Musical Instruments ( See Top 100 in Musical Instruments ) #21 in Guitar Cleaning & Care Products
Brand Name	D'Addario
Capacity	20 liters
Color	Original Version
Control Method	Touch
Customer Reviews	4.5 4.5 out of 5 stars (808)
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	Plastic
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
Room Type	Bedroom, Living Room, Office
Runtime	1 minute
UPC	019954169633
Unit Count	1 Count
Warranty Description	Replaced if defective

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TrustScore 4.5 | 7,300+ reviews

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₹ 2370

Duties & taxes included

In stock

Sold byAmazon IndiaDelivered 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 India.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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