need some advice on setting up a rain harvesting setup at home

I've seen a few food-grade barrels bulge over time, usually from thinner walls or improper venting. If you're setting up new barrels, make sure you've got a solid overflow system - keeps pressure down and prevents surprises during heavy rains. Those car wash drums do sound promising though...might have to look into those myself.

Good call on the overflow system - definitely something you don't want to overlook. I've seen barrels deform even with thicker walls, especially if they're placed in direct sunlight. Heat can really amplify pressure issues, so consider shading your setup if possible. One thing I'd add is to make sure your overflow pipe diameter matches or exceeds your inlet pipe size; otherwise, heavy downpours can quickly overwhelm the system.

As for the car wash drums, I've used them before and found they're generally sturdier than typical food-grade barrels. Just be cautious about thoroughly rinsing them out first - some detergents leave residues that aren't great for plants or soil health. A good rinse with vinegar and water usually does the trick.

"Heat can really amplify pressure issues, so consider shading your setup if possible."

Good point about shading - I've noticed the same thing. Last summer, I had a barrel warp pretty badly after just a few weeks in direct sun, even though it was supposedly heavy-duty plastic. Ended up building a simple wooden enclosure around it, and that solved the issue completely.

One thing I'm curious about though: has anyone experimented with adding filters or screens to their overflow pipes? I've been thinking about debris buildup during storms - leaves, twigs, and stuff like that - and wondering if it's worth installing some kind of mesh or filter system. My concern is that it might slow down water flow too much during heavy rains...but maybe there's a good compromise out there?

Good point about shading - I've noticed the same thing. Last summer, I had a barrel warp pretty badly after just a few weeks in direct sun, even though it was supposedly heavy-duty plastic.

I tried a mesh screen on mine last fall, thinking it'd help with leaves and stuff...but honestly, it clogged up pretty fast during storms. Ended up ditching it. Maybe a coarser mesh would work better without slowing things down too much?

Yeah, mesh screens can be tricky...I had similar issues last spring. What worked better for me was using a two-stage setup: first, a coarse mesh (like quarter-inch hardware cloth) to catch bigger debris, then underneath that a finer screen. The coarse mesh caught most leaves and sticks without clogging up too quickly, and the fine screen handled smaller stuff. Still gotta clean it occasionally, but way less hassle overall. Might be worth trying if your current setup isn't cutting it.

That's a pretty smart approach, especially if you get a lot of debris. I've been thinking about something similar, but I'm a little worried about mosquitoes breeding in the water. Did you have to take any extra steps to keep bugs out, or was the fine mesh enough on its own? I've heard some folks add mosquito dunks or something similar...just curious if that's necessary or overkill.

I've set up a few rain collection systems, and honestly, the fine mesh alone usually isn't enough to completely stop mosquitoes. A while back, I had a barrel with just mesh, and after a couple weeks I noticed larvae swimming around...not exactly ideal. So yeah, mosquito dunks became my go-to solution. They're pretty straightforward - just toss one in every month or so, depending on rainfall. They're safe for gardens and pets too, which was a big plus for me.

Another thing that helped was making sure the mesh was super tight-fitting. Any tiny gaps around the edges can let bugs sneak in. I ended up using silicone caulk around the edges to seal it better, which made a noticeable difference.

In short, mosquito dunks aren't really overkill if you're serious about preventing breeding. They're cheap insurance against having your rain barrel turn into a mosquito farm...definitely worth it from my experience.

"mosquito dunks aren't really overkill if you're serious about preventing breeding."

Fair point, but personally, I've found that keeping the water moving slightly can also do the trick. Mosquitoes prefer stagnant water for laying eggs, so adding a simple solar-powered pump or aerator might be enough to deter them without needing dunks. I'm not against dunks, just skeptical about adding anything extra if a mechanical solution can handle it naturally. Worth considering, anyway...

Fair point, but personally, I've found that keeping the water moving slightly can also do the trick. Mosquitoes prefer stagnant water for laying eggs, so adding a simple solar-powered pump or aer...

I get the point about moving water, but from experience, even a small aerator doesn't always cut it. Last summer I set up a solar fountain thinking it'd solve all my mosquito problems. It worked great...until we had a cloudy week and the pump slowed down. Mosquitoes took full advantage - little opportunists! Now I toss in half a dunk every month or so just to be safe. Not saying pumps can't work, but they're not foolproof either.

"Mosquitoes took full advantage - little opportunists!"

Haha, yeah, mosquitoes are annoyingly resourceful. I've noticed the same thing with solar pumps - great in theory, but cloudy days can really mess things up. Your dunk idea is solid; I've used them too, and they're pretty reliable. Another trick I've tried is adding a fine mesh screen over openings to keep mosquitoes out entirely. Not perfect either, but every bit helps...

Yeah, mesh screens definitely help, but honestly, they're kind of a pain to keep clear of debris. I've seen folks set them up and then forget about them - next thing you know, leaves and gunk pile up, water flow slows down, and you're back to square one. The dunks are decent enough, but personally, I've had better luck with just making sure the tanks stay sealed tight. Mosquitoes can't breed if they can't get in there in the first place.

Also, about those solar pumps - you're right about cloudy days being a bummer. If reliability matters (and it usually does), I'd recommend looking into a small battery backup or even a manual override option. It might seem like overkill at first, but trust me, you'll thank yourself the first time your system keeps running smoothly through a cloudy stretch or power outage...

I've been thinking about sealing my tanks too, but I'm wondering - doesn't that make it tricky to check water levels or clean inside occasionally? I'm pretty new at all this (first-time homeowner here), and I tried the mesh screen thing already. Honestly, it was a hassle with all the leaves and pine needles in my yard. Maybe a battery backup for the pump is worth looking into... cloudy days here are no joke.

I get why sealing seems appealing, but honestly, I prefer keeping mine accessible. Had a sealed one before and it was a pain whenever I needed to check levels or clean out gunk. Maybe try a finer mesh or angled screen setup instead?

Yeah, sealed setups can be a hassle. I tried finer mesh myself - cheap and easy fix. Still gotta clean occasionally, but way less gunk buildup overall. Worth a shot before investing in anything pricier.

Yeah, finer mesh definitely helps keep the bigger debris out - good call there. Have you noticed any difference in water flow rate since switching to a finer mesh? I've heard some folks mention it slows things down a bit. Still, sounds like a solid compromise if it means less frequent cleaning. Honestly, anything that cuts down on maintenance headaches is worth trying first before shelling out for pricier gear...

Yeah, finer mesh is definitely worth it - sure, you might lose a bit of flow, but honestly, it's barely noticeable unless you're dealing with a massive downpour. Plus, fewer weekends spent elbow-deep in slimy leaves? Sign me up...

Yeah, finer mesh does help, but honestly, I still ended up with some gunk buildup after a few months. Maybe it's just my trees...but I'd still recommend checking it every now and then to avoid surprises. Learned that the hard way last spring.

Yeah, mesh alone won't stop everything - especially if you've got messy trees. I had a similar issue at my place (big maple right next to the gutters, ugh...), and ended up adding one of those first-flush diverters. Basically, it sends the initial runoff (with all the dirt and leaves) away from your main tank. Super easy to install and really cuts down on maintenance.

Also, quick tip: even with the diverter, definitely peek inside every couple months. I once found a tiny frog chilling in there...no idea how he got past the mesh, but at least he seemed happy. 😂

First-flush diverters are great, but I've seen some setups where the diverted water just pools near the foundation - definitely not ideal long-term. Did you run yours into a garden bed or something similar to soak it up? Curious how others handle that runoff...

"Did you run yours into a garden bed or something similar to soak it up?"

Yeah, pooling water near the foundation is a bit like inviting termites over for a pool party - not the best idea, lol. I usually recommend running the diverted water into a gravel-filled trench or directly into raised garden beds. At my place, I set up a simple rock-lined swale that guides runoff straight into my veggie patch. Tomatoes seem pretty happy so far...