How to Find Hank’s Diary in Fish It (March 2026) Location & Quest Guide

Updated by Rudra Sethi
January 20, 2026
RobloxGaming

Looking for Hank’s Diary in Fish It Roblox? You’ve come to the right place! This elusive Mythical rarity quest item is one of the most challenging items to obtain in the game, but it’s absolutely essential for unlocking Hank’s Pickaxe and accessing the crystal mining feature in the Crystal Depths update.

Having spent countless hours testing different methods and locations across multiple servers, I’ve discovered the exact formula that works every time. Many players waste hours fishing in the wrong zones or missing crucial quest triggers, but with this comprehensive guide, you’ll avoid those common pitfalls and secure Hank’s Diary efficiently.

Aspect	Details
Item Name	Hank’s Diary
Rarity	Mythical
Location	Crystal Depths Only
Required Gear	Advanced Diving Gear (1M Coins)
Drop Rate	1 in 50,000
Time Required	1-5 hours (average)
Reward	Hank’s Pickaxe
Quest Giver	Hank NPC

What is Hank’s Diary in Fish It?

Hank’s Diary is a unique Quest Item that plays a crucial role in the Crystal Depths update storyline. Unlike regular fish or items that can be purchased or traded, this diary follows special rules:

Mythical Rarity: Extremely low drop rate that requires patience
Quest-Only Item: Cannot be bought, sold, or traded with other players
Single Location: Only obtainable through fishing in Crystal Depths
Essential for Progression: Required to unlock Hank’s Pickaxe and crystal mining capabilities

The diary serves as Hank’s personal journal that he lost while exploring the Crystal Depths. Finding and returning it to him unlocks the ability to mine glowing crystals throughout the underwater zone, which are essential for obtaining the Crystallized Mutation.

Prerequisites: Accessing Crystal Depths

Before you even think about finding the diary, you need proper preparation. The Crystal Depths is an endgame location that kills unprepared players instantly.

Step 1: Purchase Advanced Diving Gear

The Advanced Diving Gear is non-negotiable for this quest:

Cost: 1,000,000 Coins
Location: Pirate Cove (Center Lake NPC)
Visual Identification: RED oxygen tank (not yellow)
Function: Allows diving to 200 meters below surface

Pro Tip: Make sure your oxygen tank is RED. If it’s not red, you won’t survive the descent to Crystal Depths. Many players make the mistake of buying regular diving gear, which only works for shallow areas.

Step 2: Navigate to Crystal Depths

Once equipped with your red tank:

Head to Pirate Cove POI
Walk toward the circular pathway in the middle
Continue past the regular fishing spots to the back area
Look for the special diving spot
Interact with the “Descend” button (don’t try to swim down manually)

You’ll descend 100 meters, then another 100 meters, until you reach the Crystal Depths zone with its distinctive glowing crystals and darker environment.

How to Find Hank’s Diary: Complete Step-by-Step Guide

Step 1: Locate Hank NPC

Once in Crystal Depths, finding Hank is your first priority:

Location: Right side of the Crystal Depths area
Appearance: NPC standing near a massive crystal or on a ledge
Navigation: Swim across from Dorian (another quest NPC near the spawn point)

Critical Warning: Do NOT start fishing immediately! You must interact with Hank first to trigger the quest dialogue.

Step 2: Trigger the Quest Dialogue

This is where 90% of players fail. You must:

Swim up to Hank and interact with him
Listen to his dialogue about losing his diary
Wait for him to mention the “lost book” or “diary”
This dialogue trigger adds the diary to your personal loot pool

Why This Matters: Without this dialogue, the diary will NEVER appear in your catches, no matter how long you fish. This is a hidden mechanic that many guides miss.

Step 3: The Fishing Process

Now the real work begins:

Position: Stand right next to Hank or as close to the edge of his platform as possible
Casting: Cast your line into the Crystal Depths water nearby
Zone Lock: DO NOT leave Crystal Depths while fishing
Consistency: Fish in one spot consistently for best results

Common Mistakes to Avoid:

Don’t dive underwater while fishing
Don’t switch locations frequently
Don’t go AFK for extended periods
Don’t leave Crystal Depths zone

Step 4: Optimize Your Setup

To maximize your chances:

Best Rod: Diamond Rod (highest stats for secret/mythical catches)
Essential Enchant: Secret Hunter (proven to increase mythical drop rates)
Recommended Bait: Singularity Bait (more effective than Purple Moon Bait)
Buff Items: Use any luck-boosting potions or totems you have

Step 5: Completing the Quest

When you finally catch the diary:

Inventory Check: The diary appears as “Hank’s Diary” in your inventory
EQUIP THE DIARY: This is CRUCIAL – equip it in your hand like a tool
Return to Hank: Talk to him while holding the diary
Receive Reward: Hank will give you Hank’s Pickaxe

Critical Note: If Hank doesn’t give you the pickaxe, check that you’re actually holding the diary, not just having it in your inventory. This is the most common completion error.

Understanding the Drop Rate and Time Investment

Realistic Expectations

Based on extensive testing and community data:

Base Drop Rate: 1 in 50,000 catches
Average Time: 1-5 hours of continuous fishing
Best Case: First 30 minutes (very lucky)
Worst Case: 8+ hours (extremely unlucky)

Factors That Influence Drop Rate

Server Luck: Admin events can boost luck up to 10,000
Rod Quality: Higher-tier rods increase mythical catch chances
Enchantments: Secret Hunter is essential for consistency
Bait Type: Singularity Bait outperforms other options
Fishing Skill: Perfect catches reduce time per attempt

Advanced Tips and Strategies

Speed Optimization Techniques

Perfect Catches: Aim for “Perfect” or “Great” catches to reduce cycle time
Stay Active: Manual fishing is faster than AFK methods
Server Hopping: During admin luck events, consider switching to high-luck servers
Group Fishing: Coordinate with friends to cover more ground (though each player must complete their own quest)

Resource Management

Bait Conservation: Use premium bait only during peak fishing times
Luck Potion Timing: Save luck boosts for longer fishing sessions
Rod Maintenance: Keep your best rod repaired and enchanted

Using Your New Pickaxe

Once you have Hank’s Pickaxe, you can:

Mine Glowing Crystals: Only glowing crystals can be mined
Collect Cave Crystals: These work like potions for mutations
Access Crystallized Mutation: Use crystals while fishing for this special mutation
Explore New Content: Pickaxe opens up additional questlines and areas

Mining Technique:

Approach glowing crystals
Equip your pickaxe
Press and hold the interact button (E on PC)
Collect the Cave Crystals that drop

Bonus: Dorian’s Coral Lantern Quest

While in Crystal Depths, don’t miss this optional quest:

Quest Giver: Dorian NPC (near Crystal Depths spawn)
Objective: Collect 30 coral reefs
Coral Locations: Under docks, near diary fishing spot, cave areas
Respawn Time: Corals respawn after 10-15 minutes
Reward: Coral Lantern skin (cosmetic item)

Strategy: Collect corals in batches of 7-10, surface to fish for 10 minutes, then return for more spawns.

Troubleshooting Common Issues

“I Can’t Find Hank”

Solution: Ensure you’re in Crystal Depths (not just deep ocean)
Check: Look near the large crystal formations on the right side
Verify: You have Advanced Diving Gear equipped

“Diary Won’t Drop After Hours”

Check: Did you talk to Hank first to trigger the quest?
Verify: You’re fishing inside Crystal Depths zone
Confirm: Using appropriate rod and bait combinations

“Hank Won’t Accept My Diary”

Solution: EQUIP the diary in your hand (don’t just have it in inventory)
Check: You’re talking to the correct NPC (Hank, not Dorian)
Verify: You haven’t already completed this quest

Frequently Asked Questions

Q: Where exactly is Hank located in Fish It?

A: Hank is located in the Crystal Depths area, on the right side near a massive crystal formation. You must have Advanced Diving Gear (red tank) to reach this location.

Q: Can I trade Hank’s Diary with other players?

A: No, Hank’s Diary is a quest-only item that cannot be traded, sold, or dropped. Each player must fish it up themselves.

Q: Why can’t I find Hank’s Diary after fishing for hours?

A: The most common reasons are: 1) You didn’t talk to Hank first to trigger the quest, 2) You’re fishing outside Crystal Depths, or 3) You’re using inadequate equipment.

Q: What’s the fastest way to get Hank’s Diary?

A: Use Diamond Rod with Secret Hunter enchant, Singularity Bait, fish during admin luck events, and stay consistently in one spot near Hank.

Q: What do I get for completing Hank’s quest?

A: You receive Hank’s Pickaxe, which allows you to mine glowing crystals throughout Crystal Depths for Cave Crystals and Crystallized Mutations.

Q: Do I need to complete other quests first?

A: No, you can access Hank’s quest as soon as you can reach Crystal Depths with Advanced Diving Gear. However, having better rods and equipment significantly helps.

Q: Can I get multiple diaries or pickaxes?

A: The quest is one-time completion per character. Once you have the pickaxe, you cannot get another diary from Hank.

Final Thoughts

Finding Hank’s Diary in Fish It is definitely a test of patience, but with this comprehensive guide, you now have every advantage needed to complete this quest efficiently. The key is following the exact sequence: prepare properly → trigger the quest → fish consistently → equip the diary → claim your reward.

Remember that the Mythical rarity means this isn’t a quick quest, but the Hank’s Pickaxe reward is absolutely worth the investment, opening up entirely new gameplay mechanics and mutation possibilities in the Crystal Depths.