Hello everyone. I wanted to say thanks for all the amazing posts about construction, I pulled a ton of resources off the site for my new vivarium. I used a combination of a couple methods and then did a little of my own.
I started the project with 3 different size pieces of PVC I had laying next to the shed. I heated them using our propane BBQ. Once they were really soft I bent and twisted them into the shapes I was going for. The first was the most difficult. The pipes are really hot so I used thick water soaked gloves. Once I had them where I wanted I dipped them in a bucket of cold water freezing them in place. Each additional piece was just formed around the prior piece.
Once the two PVC trees were completed they were coating in tinted drylok. I used about 10 different color blends to get the look I was going for. While I was waiting for them to dry I drilled two holes in the back of the Exo-Terra. The holes were 1 3/8" because I was going to be using 1/2" bulkheads. The drilling was far more simple then I expected. I bought a rigid glass/ceramic/granite hole saw from Home Depot. I used a piece of rope taped to the glass to create a well. I had a hose running the entire time keeping the glass from getting to hot. I used a cordless drill and never applied any pressure downwards, I just held it in place. Each hole took two to three minutes. I then installed the bulkheads. After the trees dried for a couple days I began foaming them in place.
I forgot a set. While the trees were drying I took a can of Great Stuff foam and made a bunch of foam balls on wax paper. In the middle of each ball I put a regular bendy straw with the bendy part just sticking out the bottom so I could direct them while I foamed them in place. I did this so each one would have a place to let water out. I let them sit overnight to cure. In the morning I carved them into pots to be foamed into the background. Once everything was foamed in I let it sit for a couple days to make sure the foam was good and cured. I came back and began carving all the background. At the top of the tank I had made a rather large thick section of foam to create a small pond where the water will be returned to the tank. I sculpted it so it would be shallow and would overflow in three areas creating the water feature in the back. I debated making it tight to the top with little hole to let the water out but opted to open it up so frogs could easily get in and out. I also carved two additional pools down the background for water to accumulate but not be deeper then 3/8". I coated the areas that would have water flowing regularly with Drylok. I let that dry and then water tested the tank. I was really glad I did this before I added the silicon and substrate because I had to make several adjustments to get the flow rates I was looking for. Once I had what I was looking for I flipped the tank upside down so all the water could drain out and let it dry in the sun for another couple days. I spread silicon over the drylock where the water would be flowing and then sprinkled different size pebbles and sand. Next I mixed equal parts sphagnum moss, peat moss and coconut bedding. I covered the remaining background with GE Silicon II and then more of the bedding. It took a few days and several coats to get the coverage needed to completely cover the background. I also went back through and added some of the mix to the sand and pebbles to break it up a little bit. I am in the process of ordering plants now and will post more pics once I have it planted.
very nice looking trees there. i was going to make pvc branches and vines but then just copped out and cut shaded limbs off of cedars for that instant jungle look.
Brian, I think your roots are great. I really debated using the silicone method because I really do like the look and how it helps keep up the humidity.
Those are the best looking viv roots I have ever seen. Nice
To those contemplating copying this method (like me)...just a word of warning; burning PVC creates a very, very toxic chemical called Phosgene, and the 3M dust masks will NOT help for phosgene. Just an FYI.
Once again, awesome roots and I am now trying to decide how to do this in the Idaho winter with freezing outside temps and my BBQ now put away inside the garage.
To those contemplating copying this method (like me)...just a word of warning; burning PVC creates a very, very toxic chemical called Phosgene, and the 3M dust masks will NOT help for phosgene. Just an FYI.
Thank you for the heads up about burning the PVC. I did mine out in the backyard so hopefully it won't kill me! Ha.
Anyways, as the build progressed I learned a trick to keep from burning the pipe. I turned the right and left burners on high and left the center burner off. I used a pair of vise grips on each side to hold the lid open 1-2". This allowed the grill to reach about 450 degrees. I would then slide the pipe over the burner that was off and it would keep from burning. After a couple minutes it would be like a rubbery limp noodle. Hope it helps and good luck on your build!
For the base I used 2-3 inches of hydroton covered with fiberglass window screen and topped with a thin layer of gravel. Around the edges I put a layer of sphagnum moss and I will be covering the bottom with oak leaves. There is low area in the middle to make a shallow pool once I add water. I'm waiting on a stand from Amazon to add the water and hopefully this week I will get the rest of the plants I ordered.
I'm getting ready to do a 29 build and was interested in the pvc method, but I was wondering did you put drylok over the pvc/GS foam or did you cover it in silicone or grout first? I've read so many threads on this and some people sand the pvc and then apply grout and drylok; I'm looking for a method that doesn't involve grout and curing to get the pH right.
I am sorry about the delayed response. I responded when you asked the question but I must not have sent it because it isn't showing.
I used a combination of both methods. I bent all the PVC and then coated it with a mixture or Drylok and Eco-earth. It took a little trial and error but I found making the mix more like a paste and dabbing it on worked the best. A word of caution; if the Drylok is applied very thick it doesn't really set up so take your time and do lots of thin coats. I would put on a layer and then set it in the sun for a couple hours and then do another coat.
Once I had the trees painted and detailed like I wanted I used Great Stuff to install them in the tank. I also did several layers of the foam to get my desired shape. I would make a layer, let it cure overnight, shape it, and do it again. Eventually I had what I was looking for and then covered it with the silicon and peat/eco-earth/moss blend. I just put the silicon right up to the edge of the PVC. At first I was really concerned about getting it on the tree but then just went with it.
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