Fix Pen (Penicillin) Tablets Fish Antibiotics
SKU: 81785239276

Fix Pen (Penicillin) Tablets Fish Antibiotics

Sale price$41.39 Regular price$45.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Fix Pen (Penicillin) Tablets Fish AntibioticsFix Pen (Penicillin) Tablets: Trusted Fish Antibiotics Fix Pen (Penicillin) Tablets are a dependable remedy for bacterial infections in aquarium fish. It is a broad spectrum antibiotic targeting gram positive bacteria to treat fin rot, columnaris, and gill disease. It's designed for ease of dosing and rapid dissolution, and it is safe for use in both fresh and saltwater aquariums, promoting health and vigor in your aquatic pets. Fix Pen (Penicillin)

Fix Pen (Penicillin) Tablets: Trusted Fish Antibiotics

Fix Pen (Penicillin) Tablets are a dependable remedy for bacterial infections in aquarium fish. It is a broad-spectrum antibiotic targeting gram-positive bacteria to treat fin rot, columnaris, and gill disease. It's designed for ease of dosing and rapid dissolution, and it is safe for use in both fresh and saltwater aquariums, promoting health and vigor in your aquatic pets.

Fix Pen (Penicillin) Tablets are a reliable and effective choice for treating bacterial infections in aquarium fish. Their formula is quick-dissolving, ensuring even distribution. It is easy to administer for both the beginning and experienced aquarist. For mild infections or more serious bacterial outbreaks, Fix Pen rapidly helps restore health and vitality to the aquatic environment.

Key Benefits:

  • Broad Spectrum of Action: This antibiotic is effective against an enormous range of bacterial infections caused by gram-positive bacteria, common in fish diseases.
  • Common Fish Infections: This medication is effective in treating diseases in fish, like fin rot, mouth rot, and skin lesions, caused by bacterial pathogens.
  • Easy Application: Penicillin becomes easily applied to your fish when its pills are dissolved in water or, where possible, with medicated feeding.
  • Relatively Nontoxic to Fish: When used properly, Penicillin can be relatively nontoxic in moderate doses for many species of freshwater and some marine species.
  • It can speed up the recovery process by stopping the development of injurious bacteria. In this way, Penicillin reduces the stress of infected fish and makes them healthy, as before, in a very short time.
  • It reduces the possibility of the infection spreading to other healthy fish in the aquarium or tank by treating the infected one.

Directions:

Add one 500mg tablet into the aquarium for each 20 gallons of water to be treated. Repeat 24 hours later. Make a partial water change between treatments. The duration of treatment will depend on the type and severity of infection - it is recommended that extended medication baths continue for at least 5 days, but no more than 10 days. If there is no improvement after 5 days, discontinue treatment.

Cautions:

For aquarium use only. Not for human use. This product should not be given to fish intended for human consumption. In case of accidental overdose, contact a health professional immediately.

Storage:

Keep the lid tightly fastened and store at a controlled room temperature of 59°-86°F. (15°-30°C).

FAQ

What does Fix Pen treat?

It is used to treat gram-positive bacterial infections such as fin rot and gill disease.

Can it be used in saltwater tanks?

Yes, Fix Pen is effective in both freshwater and saltwater aquariums.

Does it affect the beneficial bacteria?

Yes, Penicillin may affect beneficial bacteria, so close monitoring of water quality is required.

Is it safe for invertebrates like shrimp and snails?

No, Penicillin may harm invertebrates; remove them before treatment.

How long is the treatment duration?

Treatment generally lasts for 5-7 days, depending on the severity of the infection.

Can I use it for betta fish?

Yes, it is nontoxic for bettas when dosed correctly.

Does it discolor the water?

No, the Fix Pen dissolves clearly and does not color the water.

Is it safe for live plants?

Generally, yes, it is safe for most aquarium plants.

How should I store the tablets?

Store them in a cool, dry place, away from light and moisture.

Does Fix Pen expire?

Yes, check the expiration date on the packaging for maximum effectiveness.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81785239276

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 2319 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
W
Verified Purchase
Weekly Shopper Jessica Marie
Charlottesville, US
★★★★★ 5
I must have for pregnant women! Definitely helps sleep and comfort for sleeping!!
Size: 57 Inch, Color: Light Grey, Size: 57 Inch, Color: Light Grey
I do love this pillow, it does take up a lot of space on my queen bed! But when I wrap my legs around the pillow, it gives me much relief on my back! It also has basically a built-in pillow so you don’t even need to use a pillow! I love that I was able to unzip the outer material and wash it! You can use it to sit up and support your back, and when the baby comes, you can use to help with feeding! sometimes I have to turn it completely on the other side if I want to turn over, it’s big!! heavy! Very soft! Not flat at all! Firmness is great! Height is great! I highly recommend! I’m also five months! i got it about 2 months ago!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
A
Verified Purchase
Ashleigh
Bozeman, US
★★★★★ 5
Buy this one!
Size: 65 Inch, Color: Light Grey
This was a great buy! I looked through many many different options before buying and this one was the one I chose. Definitely a good choice. It keeps its shape and is cool to the touch which is amazing for a hot sleeper. It helps so much with my sore hips being 7 months pregnant. Fits great on my queen size bed with room still got my partner to sleep comfortably as well. Definitely recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
M
Verified Purchase
Michele strauss
Phoenix, US
★★★★★ 5
Great pregnancy pillow!!
Size: 57 Inch, Color: Light Grey
I LOVE this pillow. It arrived quickly and was packaged very well. It was pretty squished when it arrived, but fluffed up very quickly! I didn't notice any odor when I unpackaged it. Love that the cover can just zip off for easy cleaning. It's helped a ton with my hip pain this pregnancy. It stays pretty cool, especially when compared to my normal pillow. First night I had it was the best sleep I've had in a long time and I look forward to laying down with it. Only bummer is it takes up quite a lot of room on the bed. I don't mind, but I do feel bad for my husband who I share with lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Amanda S
Boise, US
★★★★★ 4
good
This pregnancy pillow feels really comfortable and provides good support while sleeping. It is a bit bulky, so sometimes I switch back to my regular pillow, but overall, it still feels really good and helps me get more comfortable at night.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
I
Verified Purchase
It’s All AOK
Los Angeles, US
★★★★★ 5
10 out of 10
Size: 57 Inch, Color: Light Grey
10 out of 10. Just got this in and I am finally sleeping at night. So soft, instant lower back relief, and fits well even on the couch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026

recommand products