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💦 Clear water, clear mind—make your pond the envy of the neighborhood!
Envii Pond Klear Xtra is a powerful, natural pond treatment designed to clear green and murky water by harnessing billions of beneficial bacteria. Safe for all fish and wildlife, it treats up to 100,000 litres, controls sludge, and reduces blanket weed, making pond maintenance effortless and eco-friendly.




| ASIN | B012NB9YEQ |
| Best Sellers Rank | 1,996 in Garden ( See Top 100 in Garden ) 17 in Water Garden & Pond Treatment |
| Brand | envii |
| Brand Name | envii |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.0 out of 5 stars 1,937 Reviews |
| Item Form | Liquid |
| Item Weight | 1.08 Kilograms |
| Item form | Liquid |
| Item weight | 1.08 Kilograms |
| Liquid Volume | 100000 Litres |
| Liquid volume | 100000 Litres |
| Manufacturer | Bio8 |
| Model Number | PK1L |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 796890581377 |
| Unit Count | 1000.0 millilitre |
| Unit count | 1000.0 millilitre |
F**S
Effective product
This product works brilliantly in my small pond to clean the water so that it is now clear. It does not affect the invertebrate pondlife if you follow the instructions. Very pleased with the result.
M**T
the best product I have used and will persevere with
Have used this product 4 times and although I have no pump or filter the water is definitely beginning to clear. My pond is very small 2foot diameter and 20 inches deep, the pond weed gets clogged very quickly but so far this is, in my opinion, the best product I have used and will persevere with it
C**L
Great results - but it DOES take time so have patience.
Pond was suddenly hit by blanket weed this spring and I tried all sorts to sort it out. I had some good results and the water clarity improved but still had sludge on the bottom of the ond and over submerged rocks. So I resorted to Pond Klear Xtra as it got good reviews and promised what I needed. Remaining blanket weed died very quickly to go with me skimming it. The dead stuff caused problems but Pond Klear Xtra suddenly started to work (OK the bacteria need to grow and breed) and now half the sludge has been removed. Am continuing to dose the pond and clean the filters every couple of days and things continue to improve. It has taken a couple of months but has save me draining or using a pond vac to try to clear it all. Frogs are thriving so no ill effects there and birds are still bathing and drinking every day. Looking forward to a few more weeks of the little bugs chomping their way through the remaining sludge so I can enjoy the crystal clear water and clean environment of the pond. My advice is to 'stick with it' and not expect an instant result. It is not a cheap product but it does do 'what it says on the tin'. Manufacturers emphasise it is not a quick fix so please don't expect that - I doubt there is a "quick fix" for this problem!
C**J
Waiting to see
First dose a week ago, no sign of it clearing yet, can't get the brand I used to use, will treat again this weekend to see what happens. Quite expensive if it doesn't work.
S**R
Bingo!!!!
I inherited a pond when I moved house that hadn't been maintained in 15 years! Boy, what a mess! 2 feet of sludge and and 20,000 litres of thick water. I was loathed to put my koi into this muck but had no choice. So the battle began in April of this year when I bought the first lot of Pond Klear Extra which failed miserably. I had some excellent help from Andy Hiron at Bio8 who responded to my emails almost instantly each time. Thank you, Andy. I had introduced some plants to the pond which in turn introduced an abundance of parasites and lost 50% of my stock, including my prized koi. Note to self....thoroughly wash all oxygenating plant "before" adding to the pond! Pond treated, happy healthy fish, water tested and stable, now onto water clarity. Last week Day 1 - Cleaned filters and removed UV bulbs. Carried out a 30% water change. Added Envii Sludge Klear Day 2 - added Envii Pond Klear Day 4 - water born algae build up but the water itself appeared clearer?. Cleaned filters and replaced UV Bulb Day 5 - the water is definitely clearer! Day 6 - are my eyes deceiving me! Are they fish I can see???? Day 7 - WOW! I can see at least 3 feet down and all of my fish, including some Rudd which I didn't even know I had! If the ponds stays at the current level of clarity I will be extremely happy. But I have a feeling that I will be able to see the bottom which is 5 feet in some places over the next few days. To say I am pleased is an understatement. Hopefully you can see the difference in the attached photos. One before Pond Klear and two taken today, day 7. I've tried so many products in the past but won't be now. This is my recipe for success!! Update July 21. Pond crystal clear! Envii sludge klear is also amazing. I can see patches if white gravel that I didn't know was there!
I**P
Good
Use it for a small pond with goldie, frogs and other creatures . Works really for well for a little pond Good quality water . Nice , clear and clean. Bigger scale ? No idea.
A**A
Useless. Don't waste your money
Didn't work for me, and I followed all instructions on the bottle to the letter. After I used up the entire bottle, I received an email from the company selling this product instructing me as to the steps to take to make sure this product works on my pond and before any negative feedback is left. Here is the first step in their email: Before using any bacterial pond product, check your water parameters – the pH level should be below 8.5 and a KH level above 5 – If they are outside of this range, buy Envii Pond Equaliser to immediately buffer water and eliminate toxic heavy metals & ammonia to improve the health of your fish. In essence, they are suggesting that, in order to make this product work, I need to buy another one of their products, which I am obviously not going to do now. When they are selling this product, the description doesn't tell prospective customers that they shouldn't buy it unless their water pH level is below 8.5 and KH level is above 5 because it's not going to be effective. So you have been warned: if your water falls outside of the above range, the suggestion is to buy Pond Equaliser from this company first because otherwise Pond Klear Xtra is not going to be effective. I am not going to do that. I've wasted enough money on two of their products already: I tried Pond Klear and now Pond Klear Xtra. Both are equally useless. Called a local pond specialist. He recommended a good quality bacterial product that costs more than this one but cleared our pond quickly and without any additional purchases.
C**S
Clear
Used all doesnt seem to make a difference
M**G
Excellent
Excellent
S**C
No change after 5 weeks
Green water. Followed instructions to the letter. Gave triple dose at start. Partially exchanged water three times. After 5 weeks the pond is just as green
B**A
Geen idee
Het schijnt nogal een tijd te duren voordat het werkt, 6 tot 8 weken las ik. Dus ik kan er nog niets zinnigs over zeggen. We zijn nu ongeveer twee weken verder en het is nog steeds behoorlijk groen. Dus 3 sterren vanwege de onzekerheid of het wel gaat werken.
C**N
aclara el agua pero no la deja cristalina
como ayuda es un buen producto,pero no es todo lo que requiere un estanque para estar transparente 100%, además que tampoco es inmediato, hasta la tercera aplicación no he apreciado mucho cambio, pero después sí que se nota mucho. A parte, quita el verde (algas monocelulares en suspensión ) pero nada más. lo que también es bueno decir es que he seguido la dosificación escrupulosamente y no ha muerto ni un solo pez y ninguna rana de los varios decenas que tengo (alguno más de 100 en cuanto a peces y varias decenas de ranas ). no duraría en volver a comprarlo si se me vuelve a poner el agua verde con el sol.
V**A
OTTIMO , avete la pazienza
Ho un laghetto piccolo (3x2 m circa 1,0-0,5 m profonditi con le piante e molti pesci. Inverno si è rotto sia aspiravano sia il tubo UV lampada dentro filtro e prima che mi ero accorta con i primi caldi di marzo-aprile l'acqua è diventata verde e neanche tanto un po di aggiunta acqua fresca che aiutava. oltre di tante fango accumulato sullo sfondo. Al inizio ho aggiunto la quantità normale indicata per trattamento, ma non vedendo i resultati dopo qualche giorno ho aggiunto ancora stessa quantità o forse anche di piu (poi che ho letto che se lo stagno è sporco molto la quantità può essere raddoppiata). anche se sapevo che l'effetto non arriva subito, comunque non vedevo tanto differenza neanche dopo 1,5 settimane. Avevo perso la speranza quando improvvisamente circa dopo 2 -2,5 settimane l'acqua ha iniziato pian piano diventare sempre più limpida e lo sfondo piu pulito e quanto sembra fin adesso questo effetto è duraturo (e ancora non ho comprato il nuovo filtro UV, cioè l'effetto è senza nessun altro trattamento d'acqua). Funziona benissimo, i pesci sono sani e contenti e anche noi che finalmente li possiamo vedere. mai visto lo sfondo del laghetto cosi bene anche con filtro UV e pulendo sempre con aspiravano.
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