Can someone point me to the Algae-101 post(s)?

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Are the fish still out of the pond? If so, let it drain down. Find the leak and repair it. You can't go on like this. That's a lot of water to be constantly adding. Plus the fact that you're stressing your fish in a couple ways. And it sounds like you're stressed as well. Fix it and be done with it.
 
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If you have open cinder blocks where the rubber is spanning across the opening with no other help or protection I would say you got lucky for ten years. the water will constantly be pushing the rubber into that void , stretching it and scraping it as it does
 
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You can easily kill the stuff growing on the center fountain by turning off the water and throwing some sodium percarbonate on it. Not bicarbonate, percarbonate. You can buy it on eBay. Leave it for about 2 hours then turn the water back on. In a few days, it will be gone. I would also throw a few cups in the pond and see if it can help. It works best if the area is wet but not underwater.
 
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I don’t know. Maybe a liquid rubber treatment... maybe putting a sand/Bentonite mix on the bottom and praying every night... ;)

I seriously don’t know. This has been mentally taxing to say the least. Too much work to replace the liner, that’s my last option.
one other possibility is to push with your hand into the liner if you find the spot where the water has been leaking it should feel softer then everywhere else
 
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It's either get a new liner or do this...
Let it drain down, locate the hole, determine it's size. Get all the water away from the hole and let it dry. Clean thoroughly. I'm guessing alcohol or peroxide won't harm anything. Buy a patch kit and follow it's instructions. I searched EPDM patch kit and came up with "The PondGuy" who had one that was 8" and self adhesive for $6.99. I had my doubts, but all the reviews were great.

I would check that there isn't an eroded hole under the liner hole. If so, find a way to fill it in. If you don't, the water pressure may push down on it and tear the patch.

And as with any patching or glue adhesion, the surface has to be hospital clean. Any speck of dirt or film won't allow for good adhesion.

Keep us posted...
 
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Years ago I had a leak and used a pond caulking that was supposed to fill leaks and work under water. That stuff was horrible and didn't work at all.
So dont waste your time or money on anything like that.
 
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Years ago I had a leak and used a pond caulking that was supposed to fill leaks and work under water. That stuff was horrible and didn't work at all.
So dont waste your time or money on anything like that.
If you want to skim on cost buy a patch kit for epdm and where so many here are so uncomfortable with the whole process i would recommend patching the patch. cut one patch about three or four inches larger then the rip or tear then place a patch that is at least 4 inches larger over the patch you just installed . If possible patch both sides of the hole. It's actually pretty easy
 

addy1

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I patched my 1000 gallon stock tank that way, a patch over the hole, then a patch over the patch. Then more goop on the edge of that patch, still holding many many years later.
 
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To all... I didn’t realize I had additional replies, I wasn’t notified and had not checked, so I apologize for not being “present”.
So to reply to some of the posts...

- Reference the “hole”: there is no discoverable hole. I’ve already looked for it multiple times, and I mean I REALLY LOOKED for it! I got so frustrated that I hired a pool leak company for $350 to find the hole because I couldn’t— no hole, no soft spots, no anything. I don’t mean to be blunt, but all of these suggestions have been exhausted. Note: The pool leak company only charged me $175 because they failed (but in the past, had found an 1/8” sized cut, through sonic detection, around the grounding lug INSIDE my light housing bell of my pool).

- fish are in pond, they were only out twice for a couple days each to conduct “tests”. (I drained the pond twice to completely inspect the bottom, every crease, every fold, etc. by hand.)

UPDATE of the situation:
- pond SEEMS like it is losing water at a slower rate. Could be because 1) lots of afternoon thunderstorms in Florida, 2) algae now coating entire pond bottom and sides — I think there is “carpet algae” as well as the string algae, 3) not quite as hot and dry so less evaporation, 4) a little of all of these combined
- pond water is VERY clear
- string algae is pretty bad but is mostly on sides
- bought an aerator, but HAVE NOT installed it yet. Company sent wrong length of hose (15’ vs 25’) so I’m waiting on the new hose before I can install it. Early next week.
Have dosed the pond once, well actually twice now (including 1 hr ago) with NUALGI product. Lots of great testimonials, expensive but long lasting due,to the minute dosing requirements. 60ml bottle (mini-shampoo travel size?) should last me about 4+ months for $25. So $6 per month isn’t actually expensive, it just seems that way when you get that tiny little bottle! Lol
- I’m going to rig a skimmer setup. Bought a “kid pool” skimmer and I’m going to mod it for my pond. Unfortunately I wish I’d don’t this last week... one of my oldest, biggest fish was killed because he got stuck against the intake tube to my pump. I’d been proactive to prevent this by putting a “cage” on the end, but it didn’t help. The string algae has reduced the amount of open area on the cage making it a little stronger vacuum where it’s still open, and the fish seem to like hanging out in the algae near/underneath the pump pipe. Broke my heart, it really did. The skimmer will act as a safety valve; this won’t happen again after I’m done.
- looking to get more plants to supplement the two Irises. Put one Iris in the pond on the shelf for now, the other one is still in the bog area. Both are getting very large, almost time to trim back.

QUESTION:
I don’t know what good bacteria looks like, or if it’s even visible. There are brown specs all over the string algae now, wondering what it is. Pics are hard because of reflections but take a look...
D43092DF-6B2C-4378-ABD2-2EF37A7D90AA.jpeg
535E64BB-3E04-4EF8-B29F-F09C4E8F266F.jpeg
CFE6C09D-BF29-488E-9329-B6E2F963F7E5.jpeg
FBC2CC14-4D1D-4EFE-A39A-AFC923867512.jpeg


Pictures #2 & #4 show it the best.

Thanks for everything!

V/r
// Radar //
 
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If you have open cinder blocks where the rubber is spanning across the opening with no other help or protection I would say you got lucky for ten years. the water will constantly be pushing the rubber into that void , stretching it and scraping it as it does
Missed this in my reply so I’ll address it specifically. So, the layer go like this: earth, old carpet, liner, large flat 24” square stepping stone, another small layer of liner to cover stone, two cinder blocks facing holes up, concrete statue/centerpiece.
C2B015F4-C378-4E96-9C3D-97912C57159B.jpeg
 
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P.s. ^^^^^^

There may even be additional layer of liner on top of the pond liner and beneath the stepping stone, doubled up... I forget it’s been 17 years since I originally built the pond.
 
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Got my skimmer rig going, and the aerator is hooked up in a temporary fashion until they (AirMax) send me the new longer hose. Things are looking better and string algae seems to be looking less vibrant these days. Just put my second dose of NUALGI in a couple, hours f days ago... I think that stuff might be really good stuff!
Stirred up the water some doing the skimmer, but otherwise the water is really clear.
YouTube video, about 10 seconds long, and a couple pics of the same.

B740143C-E2FD-45ED-92FC-ABE26D319D93.jpeg


48951C5A-90FC-4C90-B596-100E331F69AE.jpeg


// Radar //
 
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how sure are of the fish count?

are you feeding the fish multiple times a day?

you need more shade from plants.... sunlight promotes algae
 
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you need more shade from plants.... sunlight promotes algae
@RadarContact1 did mention a shade sail earlier but more plants would definitely help. You'll continue to fight algae unless you complete the eco-system - fish, water, plants. You have two our of three right now, so nature is providing the third in the form of algae. I've heard Nualgi works, but it's only addressing the symptom, not the cause.
 

addy1

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Plants plants plants they really do help. I never have green water, minimal algae, filter with only plants. Never treat with any chemicals
 
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Well, I’ve got the two irises, but need more, I know. Thanks!

P.s.
Haven’t fed the fish in many many weeks.
 
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Plants plants plants they really do help. I never have green water, minimal algae, filter with only plants. Never treat with any chemicals
Any particular plants you’d recommend?
I had some water shading ones years ago, but I couldn’t see the fish, so I didn’t see the point. My irises got so big they took over half my pond. That was last year, I have since removed 95% of them and just kept the two (pieces) I have now. There was literally 1,000 (wet) pounds of iris... 15’x8’x3’ total. It was crazy!
My plant shelf is about 12” deep and about the same in width.
 
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There are definitely plants that will take over if you don't manage them - irises being one of them. But there are many that are more well behaved - or at least easier to control. We have bog bean, parrots feather, arrow plant, lizard tongue, water celery, forget-me-not, and a variety of rushes and reeds that all do well and are relatively easy to control.
 
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There are definitely plants that will take over if you don't manage them - irises being one of them. But there are many that are more well behaved - or at least easier to control. We have bog bean, parrots feather, arrow plant, lizard tongue, water celery, forget-me-not, and a variety of rushes and reeds that all do well and are relatively easy to control.
Are these plants that can possibly be bought at a local nursery, or are they specialty pond-specific internet type items? Thanks.
 
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Many nurseries carry pond plants, at least in our area. You can also find plants at regular nurseries that may not be sold as pond plants but will work - specifically rushes, reeds, sedges, etc. Look for things that are labeled as liking moist growing conditions.

I would also suggest you check Craigslist for people who may be thinking out plants and have things to give away. Once pond plants get going, you will always have way more than you need.
 
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