BLUMODULAR 1 vs BLUMODULAR 2: Picking an Internal Filter
By Ferplast U.K. | Published: 2026-11-04
Category: Comparisons
Compare BLUMODULAR 1 and BLUMODULAR 2 on price, modularity, and fit for small tanks. See which internal filter suits your setup before you buy.
Quick answer
Choose BLUMODULAR 1 if you want the lower-cost entry into the modular system; choose BLUMODULAR 2 if a slightly higher upfront price is acceptable for the same modular filtering approach. Both let you combine and add modules as needed, so the decision comes down to budget and how much expansion you plan.
What the price difference actually buys
The catalog lists BLUMODULAR 1 at USD 35.97 (compared with USD 52.90) and BLUMODULAR 2 at USD 38.61 (compared with USD 59.40). The gap is small in absolute terms, so price alone rarely decides it. Instead, treat the difference as a budget buffer for future modules or media.
Because both filters share the same modular concept, the cheaper model leaves more room to add modules later without exceeding what you would have spent on the larger unit. If you already know you want to expand quickly, the higher-priced model may feel like a better starting point—but only if the rest of your setup supports it.
The trade-off: simplicity vs. expansion headroom
BLUMODULAR 1 and BLUMODULAR 2 both let you combine and add modules as you like, and both run water through all filtering material levels because water enters sideways. That shared design means neither is more 'advanced' in principle—the trade-off is how much you want to invest upfront versus spreading cost across later additions.
If you prefer to start simple and add filtration capacity only when your tank demands it, the lower-priced BLUMODULAR 1 keeps your initial outlay smaller. If you would rather begin with the higher-priced unit and build from there, BLUMODULAR 2 gives you the same modular platform with a slightly larger initial commitment.
When tank size should override price
The supplied catalog does not list flow rates or tank-volume ratings for either model, so do not assume one is automatically better for a given tank size. Instead, use the modular design to your advantage: start with the filter that fits your budget, then add modules if you notice the water needs more filtration.
For small tanks, the compact internal format of both models is the main draw—they sit inside the aquarium rather than requiring external plumbing. If you are unsure which model suits your tank, begin with the lower-cost option and expand only if water clarity or fish load suggests you need more capacity.
Key trade-offs to weigh
- Upfront cost vs. future expansion: BLUMODULAR 1 costs less initially, leaving more budget for modules later. BLUMODULAR 2 costs more upfront but still offers the same modular expansion. If you plan to add modules soon, compare the total cost of your intended setup, not just the base price.
- Filtration capacity and tank size: Neither model lists a tank-volume rating, so choose based on your current tank and willingness to add modules. Start with either model and expand if water quality suggests you need more filtration. Monitor water clarity after setup; add modules only if needed.
- Media flexibility: Both models allow various materials to be used simultaneously, so you can run mechanical and biological media together. The choice between them does not limit your media options. Pick the model that fits your budget; media flexibility is equal.
Product facts at a glance
- BLUMODULAR 1: BLUMODULAR 1 is an internal filtering system with modules that may be combined and added as you like. You can start with a basic setup and add filtration capacity later without replacing the whole unit.
BLUMODULAR 1 - BLUMODULAR 2: BLUMODULAR 2 is also a modular internal filter that lets various materials be used simultaneously. It supports running different filter media together, which helps tailor filtration to your tank's needs.
BLUMODULAR 2
Which BLUMODULAR is right for you?
Best for
- Budget-conscious aquarists who want a modular internal filter and plan to add modules gradually
- Small tanks where a compact internal unit is preferred over external plumbing
Not for
- Aquarists who need a filter with a published tank-volume rating or flow rate before buying
- Large tanks that require high turnover beyond what a single internal filter can provide
