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Discussion Starter #1
So I've been having some issues with crypts in my 29 community. There is an area where they (and other plants) just won't grow. Normally I would attribute it to light or water movement but there are plenty of plants growing around this area, and its in the center of the tank. Let me start from the beginning.

Maybe 2 months ago I noticed a sudden and severe melt of crypts in that area. The leaves were fine, but the plants fell apart from the stems. One spiralis and one green wendtii melted. After waiting a few weeks to see if they would rebound if I put more root tabs there, I moved a pondertifolia plant there and put another root tab with it. A week or so after I moved it there, the same thing happened despite the fact that just a few inches away another C. pondertifolia plant was thriving.

I'm at a loss here. My boyfriend now calls this zone the "bermuda triangle." I know there is something wrong, but I don't know what. I want plants back in that area of the tank; it looks like a massive hole in my 'scape.

A little more details on the aspects of the tank:
- lighting: single tube 24" T8 6500k full spectrum
- ferts: once weekly flourish comprehensive, root tabs seachem
- fish and plant list found in aquarium profile

Pictures of the "bermuda triangle."





Pardon the fish blurs.

These pictures were taken about a week ago. I have since cleared the massive water sprite from the top.
 

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I have a crypt garden at one end of my tank.... Probably about four or five varieties. Early on I tried Seachem root tabs only to have them start to wilt. I immediately removed the tabs and they bounced right back. Some seem to have good results with these, some don't.

Be sure not to bury the rhizome too deep either... if they are fine everywhere else that probably isn't the problem anyway, but worth mentioning.

Jeff
 

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GAH! Stories like this make me so nervous! My tank is mostly crypts, and if they ever decide to melt on me I'm gonna seriously cry!!! *grumbles at crypts*

It doesn't sound like you made any changes that would have caused your little 'Bermuda Triangle'. . . unless either the WaterSprite or the stems in that area had a sudden growth spurt that shaded that particular spot more than the rest of the tank? Otherwise, I'm at a loss, too. I wish I could help.

On the brighter side of things, what YOU see as a a "massive hole" in your scape, I see as a little peek-a-boo window to that pretty piece of driftwood behind! If it really bothers you, you could attach a rhizome plant to the driftwood, but I like it just the way it is right now! I'd just leave it alone, honestly. . .

The C.Spiralis just to the side of the 'triangle' (Erik cracks me up) looks happy enough - and if the way mine behave is any indication, you'll probably find a little daughter plants popping up in the not-too-distant future to fill things in perfectly!

The tank looks good girl! Sorry I have nothing more to offer, hopefully someone around here will be able to shed some light (no pun intended) on your cryptic crypts. . .
 

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I just used some root tabs in my Crypt area yesterday! Is this bad? By the way I like the look of the OPs tank!
 

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I just used some root tabs in my Crypt area yesterday! Is this bad? By the way I like the look of the OPs tank!
Nah, I wouldnt' worry - as a general rule, Crypts need either root tabs or a nutrient-rich substrate. I doubt Koi's problem was from the root tabs - you're right, though - her tank is gorgeous! (see! TOLDJA!)

I've also read that crypts can get fussy when they're crowded - they don't like it when their roots bump into others - maybe that particular spot has too many roots beneath the substrate? With Crypts, who knows!!!?
 

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I just used some root tabs in my Crypt area yesterday! Is this bad? By the way I like the look of the OPs tank!
Just keep an eye on them and tale the tabs out if they wilt. my problem had to be the tabs and they are doing great without.

Having said that, I don't vacuum so my sand may be more nutrient rich than some as a result.

Everyone's setup is going to be a little different which introduces different tolerances to change.

Jeff.
 

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Very true, JDM. I DO keep my substrate clean, so while I know there's some mulm that settles below the surface, it's not likely to be as much as in yours - there's a balance in every tank, and in every tank. . . it's unique! Bonus is that with Crypts. . . *shakes head* It could really go either way! *grumbles at melty crypts AGAIN*
 

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Discussion Starter #9
Just a thought when the first melt happened did you recently place root tabs in that area? Had there been root tabs placed there before the melt, and if so how long of a time period before placing more tabs in that area? Also what type of root tabs did you use?
I did place root tabs shortly after I noticed the melt. There were root tabs there prior to the melt. I basically placed a root tab per crypt there. The brand is the Seachem brand. I'm thinking about switching brands to API root tabs and seeing if that helps. I've also had osmocote + recommended to me.

Jes, the issue with the massive hole is that there isn't as much space for the female gourami to hide anymore. And the tank just doesn't look as "full" anymore. I like my lush green paradise.
 

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Poor little honey!!! No good when it affects the fish, :-? I hope you get The Mystery of the Melting Crypts solved soon! *hugs*
 

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Personally, I'd recommend against the osmocote, especially with black sand. I've use the rootmedic tabs and they work great, but eventually all those little osmocote-like slow dissolving pellets ended up sitting on the substrate surface - very unappealing aesthetic.
 

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I've had Rootmedic + recommended to me several times in the past, Haven't tried them yet. Just out of curiousity, why do you prefer those over the other types - specifically the brand-name tabs like API and Seachem?
 

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I've had Rootmedic + recommended to me several times in the past, Haven't tried them yet. Just out of curiousity, why do you prefer those over the other types - specifically the brand-name tabs like API and Seachem?
I don't necessarily recommend them over anything else like the Flourish tabs, but I do support the idea of buying from a fellow hobbyist (Rootmedic) rather than a company like Seachem. After trying the Rootmedic, I went back to Flourish tabs (I can buy them locally)! I didn't see any difference in plant growth and I still have those darn tiny fertilizer pellets sitting on my substrate when I disrupt it by moving plants around...

Don't miss-understand. The Rootmedic was inexpensive ([email protected] has great sales periodically), they work a long time, and worked as advertised. I just didn't like the aesthetic outcome after 6 months. Oh, the extra capsules also melted in their plastic bags in my very humid workshop (where my fry grow-out tanks are). The Rootmedic tabs need to be stored in a low-humidity environment!
 

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I did place root tabs shortly after I noticed the melt. There were root tabs there prior to the melt. I basically placed a root tab per crypt there. The brand is the Seachem brand. I'm thinking about switching brands to API root tabs and seeing if that helps. I've also had osmocote + recommended to me.

Jes, the issue with the massive hole is that there isn't as much space for the female gourami to hide anymore. And the tank just doesn't look as "full" anymore. I like my lush green paradise.
Sorry that it took a few days to get back. I might be wrong but I am wondering if the problem might be too many root tabs? Not sure how close you placed the root tabs but the directions do say every 4 to 6 inches if I remember off the top of my head. Akso they say to replace every month to 3 months. I might be wrong but I am wondering if that might be causing the issue especially being able to keep anything aluve in that area now :dunno:
 

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Discussion Starter #15
Sorry that it took a few days to get back. I might be wrong but I am wondering if the problem might be too many root tabs? Not sure how close you placed the root tabs but the directions do say every 4 to 6 inches if I remember off the top of my head. Akso they say to replace every month to 3 months. I might be wrong but I am wondering if that might be causing the issue especially being able to keep anything alive in that area now :dunno:
I'm... actually wondering if that isn't part of the problem, too. I honestly wouldn't know how to work with that other than let it take it's course.

I'm going to replace the bulb this week and see if that helps the remaining crypts.
 
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