Aquarium Clarifier

Aquarium Clarifier; clears cloudy fish tanks quickly
Product No. ML90604-00
Find a Store In Stock
Clears Cloudy Water Fast
  • Safe for fish, plants AND invertebrates.
  • No harmful copper or formaldehyde.
  • Traces of iron increase effectiveness and safety.
  • Safe in soft water conditions.
  • Quickly clumps suspended particles due to overfeeding, gravel dust and turbidity associated with aquarium maintenance.
  • For freshwater aquariums

Aquarium Clarifier is rated 2.8 out of 5 by 6.
Rated 1 out of 5 by from Killed fish and snails Used this product for the first time and it killed two fish and all of our snails.
Date published: 2017-12-17
Rated 5 out of 5 by from Wow!! Our local water has had algae bloom as bad as it's ever been. I have not had a clean tank in a couple montgs and I'm a clean freak. This destroyed me! I did small frequent water changes- 75% water changes. It got so green and cloudy 2 of my fishes died! I was at a point where I felt like I had the greenness u fer control but cloudiness was still put of control! I used it yesturday and woke up w a pretty darn clear tank! U am super happy with the results considering nothing else worked!!!
Date published: 2016-10-19
Rated 4 out of 5 by from Takes time to work Used this after doing a major overhaul of a 100 gallon fish tank system. It took the 36-72 hour time frame to work. Yes, makes the water look cloudy but that is typical of any clarifier I have ever used. After the time frame the tanks were crystal clear.
Date published: 2015-05-12
Rated 1 out of 5 by from Didn't work in my tank After adding the amount suggested for my 40 gallon turtle tank, the water turned black. I changed half the water and the water was a little better. Within 4 hours my 9 inch plecostomus was dead. So far the turtles are okay. I'll need to do another water change today.
Date published: 2014-08-17
Rated 1 out of 5 by from cloudy...looks like my fish are smoking Why is it that when the product was used it looked like my tank was filled with smoke? The water is NOT clear...its cloudy/smokey appearance is unappealing and concerning.
Date published: 2014-04-18
Rated 5 out of 5 by from GREAT PRODUCT I have tried many products but this one worked the fastest and best
Date published: 2013-07-16
  • y_2018, m_1, d_22, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_ML90604, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland

Can I use it the clarified the next day after the first day if  it didn’t work.

Asked by: Kristian
Wait 72 hours then re-use. This is a slow acting product so it may still be working after 24 hours. If it works too quickly, this can cause an oxygen issue in the water. BREX
Answered by: BREX
Date published: 2017-12-18

How Many times i have to use this product to elimined the fog in My aquarium

Asked by: Magguie
It depends on what is causing the fog effect, Magguie. The care team would like to speak with you about the issue your having and make sure your using the right product. Please give us a call at 1-800-526-0650.
Answered by: Customer Service
Date published: 2017-09-08

When I put this in would I need to change the water first or/and take the fishes out before I put the treatment in??

Asked by: Joma
We would definitely recommend doing a small partial water change first, and letting the tank settle down afterwards, then dose it. You do not need to remove the fish, however. BREX
Answered by: BREX
Date published: 2017-07-17

How many days should I wait before using again?

Asked by: MMeyer
48-72 hours is usually the recommendation. This is a slow moving product, so give it at least 48 hours, and check your filter media. Make sure it is not clogged. Replace it if necessary. BREX
Answered by: BREX
Date published: 2017-04-24

How long do you have t wait between trearments

Asked by: Willy T
It is recommended to wait 48-72 hours in between treatments to give it enough time to fully do its job. BREX
Answered by: BREX
Date published: 2017-04-12

Hi - I changed the water in the aquarium and added the prescribed amount of Clarifier. It's been 4 days and the water is still cloudy. It seems I can add some more Clarifier per the posted Q&A, however, do I need to change 20% of the water first?

Asked by: Rose2662
That depends on how long the tank has been set up, and what is causing the cloudy water. If this is a brand new tank - less than a month old, then yes, I would recommend the partial water change first, as it could be due to something like an ammonia spike. Also, if you have not tested your water quality recently, you may wish to do that first to ensure you are treating the cloudy water correctly. For water quality issues, you would not want to use the Water Clarifier, but Bio Spira Freshwater Bacteria, instead, for example. BREX
Answered by: BREX
Date published: 2017-01-24

What ingredients are in this product?

Asked by: Alicia2222
It is an aluminum based flocculent with support minerals to help the floc process. BREX
Answered by: BREX
Date published: 2017-01-19

How often can you use this to rid the algae bloom? No algae on glass. Vac bottom every week. within 2 weeks the water is totally green. You can't even see the fish and they die. Can't stop the bloom. New tank 2 75 gal filters. change filters weekly.

Asked by: Dan Pruett
Thanks Dan Pruett, for your support of Marineland products! Algae is caused by excess nutrients, so you need to determine why you have this issue in order to eradicate the algae. When you vacuum the bottom of the tank, make sure to take out 10- 20% of the water. Don't take out a lot since you are vacuuming weekly. Taking too much could disturb your biological filter. Also, test your ammonia, nitrite, and nitrate levels. They should be 0 for ammonia and nitrite, and less than 10 ppm for nitrate. Test both your tank and your tap water to compare them. You mention it is a new tank, that you are changing water once a week, yet it is green two weeks after the water change. This doesn't compute. Make sure you are not over feeding. If the tank is about a month old, feed once a day, one piece of food per inch of fish, at most. Make sure all food is eaten in 30 seconds or less, and none has time to drift down to the gravel. Next, add some Marineland Bio Spira Freshwater Bacteria to get your biological filter established. Do this after a water change, and then try to not do any water changes at all for at least a couple of weeks. And last, make sure the lighting is proper for your tank. Don't leave it on more than 8 hours a day, and make sure the tank is not near a window or glass door. BREX
Answered by: BREX
Date published: 2017-09-28
  • y_2018, m_1, d_22, h_10CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_24
  • loc_en_US, sid_ML90604, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_marineland
ML90604 - 8 fl oz