Can This Kill My Fish??

Tetra No More Algae Controls Algae Growth for Water Clarity, 8 count
I want to use it in my tank because it grew A LOT of algae overnight. the tank has fake plants gravel and 2 male betta's
Is it safe to use?

 

Read the labels well, I don't think they would make an aquarium treatment for algae that would kill fish, but it's best to be safe anyway so check all the labels.

 

Read the labels well, I don't think they would make an aquarium treatment for algae that would kill fish, but it's best to be safe anyway so check all the labels.

all it says is "Do not use in tanks with live plants, snails, or other invertebrates. Remove carbon from filter during use. USE ONLY ONE TABLET FOR EACH TEN GALLONS (40L) OF AQUARIUM WATER. REPEAT TREATMENT WHEN ALGAE GROWTH BEGINS TO APPEAR." which kind of worried me. it also says " do not apply this product in a way that will contact adults, children, or pets." dose this mean that I can't feed my fish? should I do a %80 water change the next day?

 

You could use the blackout method instead since you don't have live plants.

Wrap your tank in towels so that no light can enter and leave the tank light off for the 3 to 4 days and a lot of people say that works without the algaecide since algae has to have light to grow. I've seen different discussions about whether or not to feed your fish during a blackout since you can't be sure how much the fish are eating.

Longer answer for a more perm fix:


I had a major issue with green water and did some research.

I was going to use algaecide but I found several posts from people who had used it according to the label and still ended up with dead fish. Granted, the fish might have died from something else but it scared me

So I found an old post on here from a guy who had experimented trying to figure out what conditions cause algae to grow and he reported that algae has to have high phosphates and long hours of light to thrive. He suggested the way to deal with algae without risking fish is to reduce the time aquarium lights are on and take steps to specifically reduce phosphates.

For me, I found a filter media that removes phosphates and put it in my filter using a filter bag then got a programmable power strip for my lights and reduced their on time from 10 hours (I'd turn them on before work and leave them on until I got home prior to this) down to 6 hours a day. It took about a week but my water turned crystal clear and has stayed that way for several weeks.

Also, adding some live plants once the algae is uncer control can help alleviate algae since the live plants eat the nutrients the algae would use use to grow, you just still have to watch out for high phosphates so you might want to still modify your filter for phosphate removal

 

You could use the blackout method instead since you don't have live plants.

Wrap your tank in towels so that no light can enter and leave the tank light off for the 3 to 4 days and a lot of people say that works without the algaecide since algae has to have light to grow. I've seen different discussions about whether or not to feed your fish during a blackout since you can't be sure how much the fish are eating.

Longer answer for a more perm fix:


I had a major issue with green water and did some research.

I was going to use algaecide but I found several posts from people who had used it according to the label and still ended up with dead fish. Granted, the fish might have died from something else but it scared me

So I found an old post on here from a guy who had experimented trying to figure out what conditions cause algae to grow and he reported that algae has to have high phosphates and long hours of light to thrive. He suggested the way to deal with algae without risking fish is to reduce the time aquarium lights are on and take steps to specifically reduce phosphates.

For me, I found a filter media that removes phosphates and put it in my filter using a filter bag then got a programmable power strip for my lights and reduced their on time from 10 hours (I'd turn them on before work and leave them on until I got home prior to this) down to 6 hours a day. It took about a week but my water turned crystal clear and has stayed that way for several weeks.

Also, adding some live plants once the algae is uncer control can help alleviate algae since the live plants eat the nutrients the algae would use use to grow, you just still have to watch out for high phosphates so you might want to still modify your filter for phosphate removal

Okay, THANK YOU!!!! I was pretty worried to that it would kill my betta's, I have my tank lights on for about 11 hours so I will reduce it to 6 or 7, will try blackout. I just got some blackout curtains since that could be the cause to. Going to be getting live plants for all my tanks soon! I have 4 tanks and out of those 3 have MAJOR algae growth (the one that doesn't have any is live planted lol) i'm also going to be switching to sand for 2 more of my tanks. This definitely helped! going to post in about a week with updates!

 

Okay, THANK YOU!!!! I was pretty worried to that it would kill my betta's, I have my tank lights on for about 11 hours so I will reduce it to 6 or 7, will try blackout. I just got some blackout curtains since that could be the cause to. Going to be getting live plants for all my tanks soon! I have 4 tanks and out of those 3 have MAJOR algae growth (the one that doesn't have any is live planted lol) i'm also going to be switching to sand for 2 more of my tanks. This definitely helped! going to post in about a week with updates!

Ravenahra nailed it.

You might want to add a nerite snail.

I have one in most of my tanks, and minimal algae.

Something I do with a couple of timers is have two light periods. An example in one tank the lights come on at 0700-1100 and go off. They come back on at 1700-2200. This is 9 hours of light but the lights are on when I generally am around so I get to enjoy the tank with the lights on but minimize the overall light. High light, moderately planted. It took some experimenting to reach this by simply adding or subtracting light until I got it right.

 

Okay, THANK YOU!!!! I was pretty worried to that it would kill my betta's, I have my tank lights on for about 11 hours so I will reduce it to 6 or 7, will try blackout. I just got some blackout curtains since that could be the cause to. Going to be getting live plants for all my tanks soon! I have 4 tanks and out of those 3 have MAJOR algae growth (the one that doesn't have any is live planted lol) i'm also going to be switching to sand for 2 more of my tanks. This definitely helped! going to post in about a week with updates!

Happy to help.

I hope your algae clears up quickly so you and your fish can enjoy your tanks again.