Up to 70% OFF sitewide + FREE SHIPPING on orders $75+
Thomas Labs Thomas Labs Fish Pen (Penicillin) for Common Bacterial Infections
Thomas Labs [11442-585655]

Thomas Labs Fish Pen (Penicillin) for Common Bacterial Infections

Free Shipping at $75

Use Thomas Labs' Fish Pen to knock out the organisms that make your fish sick! Using dosed penicillin, Fish Pen Forte combats bacterial infections common in aquarium fish.

  • Combats the cause of infections in your fish
  • Kills gram positive and some gram negative bacteria
  • Controls common bacterial fish diseases including fin & tail rot and flexibacter infections


Fish Pen is useful in controlling a number of common fish infections, including pop-eyes, infected eyes, fin & tail rot, gill disease, columnaris disease, skin ulcerations and other bacterial infections in ornamental fish.

Directions: Add one tablet (250 mg) into aquarium for each 10 gallons of water to be treated. Repeat in 24 hours. It is suggested that a partial water change be made between treatments. While duration of treatment depends on type and severity of the infection, it is recommended that extended baths in the medication continue for a minimum of 5 days & for not more than 10 days. Discontinue treatment with this medication if no improvement is noted within 5 days.

Keep out of reach of children. Aquarium use only.

If you are allergic to penicillin, do not put your hand in the tank for three days after treatment.

Price:$15.29 to $88.50
Ask a question about this product
0 Reviews - Submit a review
48 Contiguous USA - Order by Noon PST Mon-Fri for same day shipping.

International, HI & AK - Order by 10am PST Mon-Fri for same day shipping.


Enter quantity below and click add to cart.

Color & Quantity
Item

$15.29
$27.99
Save 45%
250mg - 30 Capsules
Status:In Stock
Model:00-12130.T1
UPC:725068001553
Sku: TL00155
Id: 585866

$23.29
$44.99
Save 48%
250mg - 60 Capsules
Status:In Stock
Model:00-12130.T2
UPC:725068053064
Sku: TL05306
Id: 585926

$88.50
$177.99
Save 50%
BULK - 240 Capsules - (4 x 60 Capsules)
Status:In Stock
Model:05306M
Sku: TL05306M
Id: 589244

Enter a quantity above and click add to cart.

We Also Suggest

Price: $4.99 to $124.00
Compare: $7.99 to $248.99
Save up to $124 (50%)
Price: $18.99 to $138.50
Compare: $34.99 to $277.99
Save up to $139 (50%)
Price: $6.12 to $76.99
Compare: $10.99 to $153.99
Save up to $77 (50%)
Price: $6.42
Compare: $10.99
Save up to $4 (42%)
Price: $5.98
Compare: $10.99
Save up to $5 (46%)