Click to Verify - This site chose VeriSign SSL for secure e-commerce and confidential communications.
Security Seal
Marine Depot Live Chat Support
Pet supplies, Pet products, and Pet Accessories for your dogs, cats, birds, fish, reptiles or small pets. Pet experts are available to help you.
New Customer? Register | Sign In
Expires in 00:00:00
In-Stock! EcoTech Radion XR15w PRO LED Light
0 items
Your cart is currently empty.
View Cart Checkout
Aquarium Supplies
Home » Saltwater Aquarium Supplies  » Medications  » Bacterial & Fungal  »  Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets
Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets

Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets

In Stock: Buy now and your order will ship the next business day
Item #:
MSRP: $14.99
You Save: $5.50 (36%)
Marine Depot 60-day Returns
At Marine Depot, we stand behind our products. That is why we offer a 60-day return period: one of the best in the industry! Learn More

Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets Information

For broad spectrum treatment and control of bacterial disease, such as body slime, mouth fungus, Furunculosis (open lesions and swelling), bacterial gill disease and hemorrhagic septicemia (blood spots without sign of skin damage). Can be used with any API Ich, fungus or parasite remedy to help prevent secondary bacterial infection. This medication will not color the aquarium water.

For fresh and saltwater aquariums. Treats up to 100 gallons (10 gallons per packet).

Manufacturer Info

Aquarium Pharmaceuticals Aquarium Supplies
Aquarium Pharmaceuticals (API) has been helping people take good care of ornamental fish for over 40 years. Their research and development scientists have advanced the care of fish with all-natural medications, stable bacteria for biological filtration, one-bottle test kits, consumer-friendly dosing caps and much more. They’ve received over 25 global patents for their breakthrough innovations in the aquatics industry. And they continue to look for ways to improve the fishkeeping experience for hobbyists. Research. Experience. Dedication to scientific, quality treatment for healthy fish. It’s what makes API the first choice of aquarium owners. API manufactures and sells hundreds of products across many different product categories, including aquarium and pond treatments, aquarium equipment, aquariums and fish nutrition.

Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets Reviews

Average Rating
(5 reviews)
Sort Reviews By:

Effective and Safe

Reviewers Rating Excellent!

Posted: 8/29/2011 from PORTLAND, OR UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I battled a red slime / cyano-bacteria outbreak in my reef tank for nearly six months with everything from frequent water changes and cleaning, to red slime algae removers. All water parameters tested normally, so I could not identify the cause. Based on a number of recent online discussions of EM Erthromycin and Maracyn as effective weapons, I finally bit the bullet and resorted to this. API EM Erthromycin immediately knocked back the cyanobacteria with no harmful effect on any of my livestock - fish, corals or inverts. I could detect no discernable effect on my bacteriological filter, based on frequent water testing. The tank was slime-free within 48 hours, allowing me to finally gain the upper hand in managing this problem. It does make your skimmer go wild, so best to turn it off during treatment. All-in-all, very effective and safe.

4 of 4 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 9/7/2009 from Lawrence, MA UNITED STATES
5.0 5
Experience Level: Expert

Comments: QUTSTANDING PRODUCT EVEN BETTER THAN ADVERTISED! I purchased this product out of sheer desparation because my 55 gallon fresh water aquarium was badly contaminated with blue-green algae which smells fishy and swampy and was covering almost all of my legitamate water plants. It turns out that this "alage" was actually cyanobacterium, not alage. This product absolute destroyed the infestation and now the water no longer smells like a rotting swamp and my water is crystal clear. I could also see the increase in the energy level of my fish and shrimp.THIS IS THE REAL DEAL.

3 of 3 People found this review helpful, did you? Yes No

Erytromcycin work

Reviewers Rating Excellent!

Posted: 2/13/2009 from LAS VEGAS, NV UNITED STATES
5.0 5
Experience Level: Beginner

Comments: I had 5 gold fish in acuarium of 10 galons. One of them pass away. He showed all sign of bacterial infection. I was looking for some information for them before the fish pass away, i found and then i bought erythromicin. It came so fast but to late for my fish. The other fish are now very well. In other words it product realy work. I recommend for every one has an acuarium. Thanks petstore. Teodolinda

0 of 1 People found this review helpful, did you? Yes No

Works great on BBA

Reviewers Rating Great

Posted: 8/15/2008 from LOS GATOS, CA UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: I bought this not for actual medication but rather to help eradicate a bunch of BBA - worked like a charm. I used 1 packet (for my 100g) after each water change and it did a great job of killing off the algae.

1 of 1 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 5/20/2008 from RAINHAM, UNITED KINGDOM
5.0 5
Experience Level: Expert

Comments: excellent product,not over packaged and a must for anyone with a persistant dose of blue green cyno-bacteria.

8 of 10 People found this review helpful, did you? Yes No

Accessories for Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets

Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets Window Navigation Prev Next Zoom Close
We value your opinion & experience
Thank you for taking the time to review our products!

This is a Product Review for: Aquarium Pharmaceuticals® API EM Erythromycin Medication - 10ct Powder Packets

First tell us about yourself.

Name to display on the review: Location (ex: Anaheim, CA):
Your experience level:

How would you rate this product?

Review Title:

Write your review:
(Please focus on product quality and performance, maximum 2000 characters)

This item is temporarily unavailable but will be back in stock soon.

Item #
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.

Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Your Email:
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Your Email:
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you’ve purchased the item!

Enter the price, shipping cost and website address where you found the lower price. Then click the "Add to Cart" button. We will review the lower price while processing your order and make any necessary reductions before your order ships. Some restrictions apply. See Terms & Conditions.

Sorry! While there is no limit to the number of items we'll price match in an order, our online system will only accept one. Please call us at 1-800-566-FISH (3474) and we’ll happily price match additional items for you.

Price *
Shipping Cost *
Competitor's Website *

Sharing products with friends and family couldn’t be easier!

Just complete the fields below to send your friend or family member a personalized email message featuring the product of your choice.

Your Name *

Friend's Name *

Friend's Email *

Personal Message

Add to Wish List
Select Wish List:
Comments (up to 200 characters):
Quantity Desired:
Quantity Received:
Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
June 23, 2014
"Great company! Items where extreme top quality, not a problem with any of them. Definitely a lifetime buyer of this site."

June 17, 2014
"I place my order and 5 hours later I received a notification that it had shipped."

June 16, 2014
"They have the best on-time delivery and prompt service of all the other similar websites I have used. Recommend them highly."