Players can obtain the Power Source from the Glorp Shop for 55 Glorp Bux by speaking with the Sophisticated Glorp NPC at Roslit Island.
To get the D.R.E.D-7 Rod in Fisch, you must collect a unit part/item called the Power Source. At first glance, everyone will assume this is a fishable item from the sea. However, this is actually a purchasable item from a shop. So, if you are wondering which Shop it is or how to buy it, here is a detailed guide.
How to obtain the Power Source in Fisch

You can get the Power Source from the Glorp Shop on the Roslit Bay. The Shop is located at GPS (-1790.6, 155.0, 509.2 ), right behind the Nurse Shark exclusive bestiary pool. Interact with the character and select "Show me your shop" to see all the items they sell. Then, select Power Source and pay 55 Glorp Bux to add it to your inventory.
How to get Glorp Bux in Fisch
Glorp Bux is another virtual currency in Fisch, similar to Doubloons. You can earn Glorp Bux by exchanging any fish with the Gleebus Mutation with the Sophisticated Glorp. The only way to get any fish with the same mutation is to use the Blade of Glorp (36% chance) or trade. So, equip your Blade of Glorp and get fish with the Gleebus Mutation for a good exchange rate. Then, use the same money to purchase items from the Glorp Shop.
All Items in the Glorp Shop & Prices
Below are all the Items sold in the Glorp Shop and their current market prices.

| Item | Price (Glorp Bux) |
|---|---|
| Alien Nico Skin | 3000 |
| Blade of Glorp Skin | _ |
| Disturbance Catalyst | 215 |
| Eclipse Totem | 800 |
| Glorp Bobber | _ |
| Glorp Profile Banner | _ |
| Power Source | 55 |
| Rainbow Totem | 665 |
| :3 Title | _ |
Remember, the items in the Shop will rotate every 24 Hours. Be sure to check the Shop every day for new items and accessories for your journey. Also, you cannot open the Shop if you don't own the Blade of Glorp in Fisch.
For more on Roblox Fisch, check out Complete Roaming Fish & Spear Hunting Guide - Fisch or All 10 Fishes in Challenger's Deep (100% Bestiary) – Fisch