Bog filter and treating blanketweed


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Hi.
My pond is now over a year old and now in summer here in the UK the bog plants are going crazy!
I have some issues with blanketweed in the pond and would like to know what you guys do to control it please?
Thanks
 
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I think blanketweed is a form of algae, correct? Do you have a lot of fish for the size of your pond? Excess algae growth is almost always caused by excess nutrients in the water (fish waste, decaying plant matter, etc.)
If you would, please share the size of your pond, how many fish, what kind and size of filtration you have -- and pictures are great, too! There are so many people on here who are very knowledgeable. I know others will be able to give good advice!
 
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Roughly around 6000 litres with only 8 fish mostly goldfish which are small and 3 larger 8” ones.
Pond is filtered by a bog with pea gravel 12” deep and full of monkey flowers, iris and creeping Jenny.
Depth is 800mm and in full sun from early morning to late afternoon.
I don’t overfeed in fact I’ve just started feeding them after winter.
I’ve tried cloverleaf blanket answer which helped to some degree.
I ran some tests last night. Nitrite 0. Ph 7.5
Ammonia 0 but Phosphate a little high which is weird
 
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How big is your bog . How many gph are you pushing through the bog. Is there any circulating pumps in the pond
 
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Bog is about a 1/4 size of the pond.
Have a 10000L pump with one outlet to the bog and one entering back into the pond the opposite end for some circulation. I also have a satellite strainer connected to the pump opposite end of the pump.
I have the feed to the bog regulated by a valve so I’m guessing 4-5000 Ltr per hour through the Bog.
I do have large pebbles on the pond base which you can see from attached pictures.
 

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Bog is about a 1/4 size of the pond.
Have a 10000L pump with one outlet to the bog and one entering back into the pond the opposite end for some circulation. I also have a satellite strainer connected to the pump opposite end of the pump.
I have the feed to the bog regulated by a valve so I’m guessing 4-5000 Ltr per hour through the Bog.
I do have large pebbles on the pond base which you can see from attached pictures.
I'm not seeing any algae? I assume these aren't recent photos?
 
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mrsclem

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Was just posting the same question! A coating of green algae on the rocks and sides of pond is normal. The plants in the bog look great but there needs to be either more plants or let those grow a lot. The bog will take care of any algae. I don't see any fish so the plants may need to be fed.
 
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Sorry guys they are earlier pics just to give you some idea of size. I’ll take a few more thank you
 
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As you can see some treatment has stopped more growth for now but you can see some in there. Maybe I’m worrying too much.
I want to add some more fish soon as I know somebody selling some Koi.
 

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As you can see some treatment has stopped more growth for now but you can see some in there. Maybe I’m worrying too much.
I want to add some more fish soon as I know somebody selling some Koi.
a coating of algae on rocks and such is normal and to be expected, they won't stay pretty like when they were new. And some string algae is common in the spring, but elevated phosphates would definitely encourage it. Most of the expert ponders in this group (I am not one) strongly recommend against ever using chemical algaecides as they can cause serious problems, I'm sure some of them will chip in more on that. Your phosphates could be elevated from excess fish food, maybe?
 
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Is this algae an on going thing?
Because most of us get a algae bloom in the Spring. It takes time for the beneficial bacteria and plants to wake up from winter. It's a slow process.

I normally have crystal clear water with my bog filtration, but even my pond gets murky in the Spring.
 
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a coating of algae on rocks and such is normal and to be expected, they won't stay pretty like when they were new. And some string algae is common in the spring, but elevated phosphates would definitely encourage it. Most of the expert ponders in this group (I am not one) strongly recommend against ever using chemical algaecides as they can cause serious problems, I'm sure some of them will chip in more on that. Your phosphates could be elevated from excess fish food, maybe?
I just wanted to clarify, I meant I am not an expert, not that I am not in agreement with not using algaecides. Realized upon re-reading that that was a very ambiguous statement
 
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Bog is about a 1/4 size of the pond.
Have a 10000L pump with one outlet to the bog and one entering back into the pond the opposite end for some circulation. I also have a satellite strainer connected to the pump opposite end of the pump.
I have the feed to the bog regulated by a valve so I’m guessing 4-5000 Ltr per hour through the Bog.
I do have large pebbles on the pond base which you can see from attached pictures.
ok clearly no algae in those pics by blanket algae are you referring to algae that looks like a marines hair cut growing on all the rocks " or a bit longer like a fresh boys haircut or are you talking 3 foot long strands
 
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ok clearly no algae in those pics by blanket algae are you referring to algae that looks like a marines hair cut growing on all the rocks " or a bit longer like a fresh boys haircut or are you talking 3 foot long strands
Some of it is short some is long around 12-18”.
 
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Hair algae is amazing stuff while few will agree with that statement it grows very very fat. And is a good sign of lack of filtration . Ovestocking. Overfeeding. In general to many organics in the water. Too many leaves or old dead decaying plants sitting at the bottom of the pond etc. Then one day after you have done your part it can disappear almost over night.
 

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