Inspired by @Naturescapes_Rocco ’s no-tech bowl thread, I decided to set up something similar.
With all the highs and lows of running a high-tech planted tank, I was hoping to put together something much simpler—a small bowl with no filter, no CO₂, and minimal equipment.
12" diameter × 10" height
Approximately 3 gallons
5 watts
At the end of the two weeks, ammonia remained super high.
I eventually got impatient, did about a 90% water change, and planted the bowl.
Current plants include:
A 75% water change takes less than 10 minutes.
For the last couple of weeks after planting, I’ve been doing water changes approximately every 2–3 days.
Maybe it’s the fresh aquasoil, but the pH has been sitting around 6.6. For comparison, my main high-tech tank with APT Feast (about a year old) sits around pH 7 before the CO₂ comes on.
Plant growth has been surprisingly good. I also frequently see the plants pearling, which I wasn’t necessarily expecting from a little no-tech setup like this. The L.heterophylla has been trimmed once.
What has been particularly interesting is how easily plants taken directly from my high-tech tank seem to have transitioned to these very different conditions.
A bladder snail somehow hitchhiked in with the plants. It seems perfectly happy and has already started reproducing.
With the relatively low pH, I suspect much of the measured ammonia is present as the less-toxic ammonium form, which may also explain why the snail seems completely unbothered.
I am starting to see the power of frequent water changes with the lack of algae so far (fingers crossed).
For such a small volume of water, APT Feast may simply be more nutrient-rich than necessary. I’m curious to see how things evolve once the bowl matures.
2. Choose a different light.
The light itself works fine, but the built-in timer is frustrating.
If I turn the light on at night just to look at the bowl, it interrupts the timer cycle, and I then have to reset it the following day.
I’m not particularly handy with electrical work, but ideally I’d love a simple light that could just be plugged into a Kasa smart plug and controlled externally.
If anyone has recommendations for a good small bowl light that works that way, let me know.
Overall, though, I’m really enjoying the simplicity of this setup so far.
Looking forward to letting it mature a little more and hopefully adding some red cherry shrimp soon.
With all the highs and lows of running a high-tech planted tank, I was hoping to put together something much simpler—a small bowl with no filter, no CO₂, and minimal equipment.
Bowl
WGV Large Glass Bowl Vase12" diameter × 10" height
Approximately 3 gallons
Light
AREPK Aquarium & Terrarium Full Spectrum LED5 watts
Substrate / Hardscape
- APT Feast
- A single lava rock
Water
RO water remineralized with APT SkyFertilizer
None so far.Dark Start
I did a dark start for about 2 weeks after squeezing some mulm from an established filter into the bowl.At the end of the two weeks, ammonia remained super high.
I eventually got impatient, did about a 90% water change, and planted the bowl.
Plants
My initial goal was to use relatively fast-growing plants to help stabilize the system. Some of these may not necessarily remain in the bowl long term.Current plants include:
- Limnophila heterophylla
- Pearlweed
- Rotala ‘Blood Red’
- Helanthium tenellum
- Trident Java fern
- Mini Bolbitis
- A few assorted stems from my main tank
- Some nice floating plants
Water Changes
One of the biggest advantages of a bowl this size is how easy maintenance is.A 75% water change takes less than 10 minutes.
For the last couple of weeks after planting, I’ve been doing water changes approximately every 2–3 days.
Experience So Far
So far, the water has remained crystal clear.Maybe it’s the fresh aquasoil, but the pH has been sitting around 6.6. For comparison, my main high-tech tank with APT Feast (about a year old) sits around pH 7 before the CO₂ comes on.
Plant growth has been surprisingly good. I also frequently see the plants pearling, which I wasn’t necessarily expecting from a little no-tech setup like this. The L.heterophylla has been trimmed once.
What has been particularly interesting is how easily plants taken directly from my high-tech tank seem to have transitioned to these very different conditions.
A bladder snail somehow hitchhiked in with the plants. It seems perfectly happy and has already started reproducing.
With the relatively low pH, I suspect much of the measured ammonia is present as the less-toxic ammonium form, which may also explain why the snail seems completely unbothered.
I am starting to see the power of frequent water changes with the lack of algae so far (fingers crossed).
Things I Might Do Differently Next Time
1. Use a less nutrient-rich substrate or cap the aquasoil.For such a small volume of water, APT Feast may simply be more nutrient-rich than necessary. I’m curious to see how things evolve once the bowl matures.
2. Choose a different light.
The light itself works fine, but the built-in timer is frustrating.
If I turn the light on at night just to look at the bowl, it interrupts the timer cycle, and I then have to reset it the following day.
I’m not particularly handy with electrical work, but ideally I’d love a simple light that could just be plugged into a Kasa smart plug and controlled externally.
If anyone has recommendations for a good small bowl light that works that way, let me know.
Overall, though, I’m really enjoying the simplicity of this setup so far.
Looking forward to letting it mature a little more and hopefully adding some red cherry shrimp soon.
